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10/11/11

Adobe says goodbye to Flash for mobile platforms

Adobe product management team has sent a briefing to Adobe's partners describing the future direction of the development for multi-platform mobile application development tools.

From the security point of view, the biggest and the most welcome news is the announcement of the end of the development of Adobe Flash player for mobile platforms, except for critical security and bug fixes.

Unfortunately, even if the death of Flash for mobile platforms is imminent, Flash for desktop platforms is still very much alive. Adobe Flash vulnerabilities, together with Java virtual machine and Adobe Reader vulnerabilities, have been the most common causes for drive-by download malware infections.

It is yet uncertain what is the future of Flash on desktop, but let us hope that the widespread acceptance of HTML5 will drive Adobe in the right direction of killing Flash players on all remaining platforms.

The move comes after a pressure by iPhone and iPad users which have been frustrated by not being able to access websites built in Flash since Apple announced its decision to exclude Flash support from iOS based devices.
Was Steve Jobs right about Flash after all?
Read More...

Adobe, Apple, Microsoft & Mozilla Issue Critical Patches

Adobe, Apple, Microsoft and Mozilla all released updates on Tuesday to fix critical security flaws in their products. Adobe issued a patch that corrects four vulnerabilities in Shockwave Player, while Redmond pushed updates to address four Windows flaws. Apple slipped out an update that mends at least 17 security holes in its version of Java, and Mozilla issued yet another major Firefox release, Firefox 8.

The only “critical” patch from Microsoft this month is a dangerous Windows flaw that could be triggered remotely to install malicious software just by sending the target system specially crafted packets of data. Microsoft says this vulnerability may be difficult to reliably exploit, but it should be patched immediately. Information on the other three flaws fixed this week is here. The fixes are available via Windows Updates for most supported versions of the operating system, including XP, Vista and Windows 7.


Adobe’s Shockwave update also fixes critical flaws, but users should check to see if they have this program installed before trying to update it. To test whether you have Shockwave installed, visit this page; if you see an animation, it’s time to update. If you see a prompt to install Shockwave, there is no need to install it. Mozilla Firefox users without Shockwave Player installed may still see “Shockwave Flash” listed in the “Plugins” directory of the browser; this merely indicates that the user has Adobe’s Flash Player installed.

The vulnerabilities fixed by this update exist in versions of Shockwave 11.6.1.629 and earlier. The latest version, v. 11.6.3.633, is available here.  As I noted earlier this year, I haven’t had Shockwave on my system for some time now and don’t seem to have missed it. I’m sure it has its uses, but to me Shockwave is just another Adobe program that requires constant care and feeding. What’s more, like Adobe’s Flash Player, Shockwave demands two separate installation procedures for IE and non-IE browsers.

Hat tip to the SANS Internet Storm Center for the heads up on the Java fix from Apple. This update, available via Software Update or Apple Downloads, essentially brings Snow Leopard and Lion up to date with the Oracle patches released last month in Java 6 Update 29 (Apple maintains its own version of Java).

If you use Mozilla Firefox or Thunderbird, you may have noticed that Mozilla is pushing out another major upgrade that includes critical fixes to these programs; both have now been updated to version 8. If you’re still running Firefox version 3.6.x, Mozilla has updated that to 3.6.24 (if anyone can help decipher Mozilla’s timeline for exactly how long it will continue to support this workhorse version of Firefox, please drop a line in the comments below). Perhaps I’m becoming a curmudgeon, but I’m growing weary of the incessant update prompts from Firefox. It seems that almost every time I start it up it’s asking to restart the browser or to remove plugins that no longer work with the latest version. I’ve been gradually transitioning more of my work over to Google Chrome, which seems faster and updates the browser and any installed plugins silently (and frequently patches oft-targeted plugins like Flash Player even before Adobe officially releases the update).
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06/10/11

NSS Labs offers reward money for fresh exploits

The company has set aside $4,400 for rewards for working exploits for 12 vulnerabilities

NSS Labs is sweetening the pot for its ExploitHub marketplace by offering rewards to security gurus who can write working exploits for a dozen "high-value" vulnerabilities.

The company, which has set aside $4,400 in reward money, plans to give $100 to $500 to the first people to submit a working exploit for the vulnerabilities. Ten of the vulnerabilities concern Microsoft's Internet Explorer browser, and two were found in Adobe's Flash multimedia program.

[ The Web browser is your portal to the world -- as well as the conduit that lets in many security threats. InfoWorld's expert contributors show you how to secure your Web browsers in this "Web Browser Security Deep Dive" PDF guide. ]

The exploits must be client-side remote exploits that can result in code execution. Proof-of-concept code and denial-of-service conditions do not qualify. NSS Labs will pay the developer with American Express gift cards. Residents from countries that the U.S. has a standing embargo against are not allowed to participate.

NSS Labs said that those who win can then sell their exploits on ExploitHub, a marketplace the company set up for penetration testers to acquire exploits to test against their infrastructure. ExploitHub was set up to help with the development of penetration testing tools and to assist computer security researchers.

Those who write the winning exploits may then sell their code on ExploitHub, with NSS Labs taking a 30 percent commission. Penetration testers can also make requests via the marketplace for exploits for specific vulnerabilities. Those who want to buy exploits are vetted by NSS Labs to ensure the marketplace is not abused.

ExploitHub also only sells exploits for vulnerabilities that have been patched and does not host ones for zero-day vulnerabilities. The vulnerabilities that NSS Labs is offering the reward for are:
  1. CVE-2011-1256: Microsoft Internet Explorer CElement Memory Corruption
  2. CVE-2011-1266: Microsoft Internet Explorer VML vgx.dll Use After Free
  3. CVE-2011-1261: Microsoft Internet Explorer selection.empty Use After Free
  4. CVE-2011-1262: Microsoft Internet Explorer Redirect Memory Corruption
  5. CVE-2011-1963: Microsoft Internet Explorer XSLT Memory Corruption
  6. CVE-2011-1964: Microsoft Internet Explorer Style Object Memory Corruption
  7. CVE-2011-0094: Microsoft Internet Explorer CSS Use After Free Memory Corruption
  8. CVE-2011-0038: Microsoft Internet Explorer 8 IESHIMS.DLL Insecure Library Loading
  9. CVE-2011-0035: Microsoft Internet Explorer Deleted Data Source Object Memory Corruption
  10. CVE-2010-3346: Microsoft Internet Explorer HTML Time Element Memory Corruption
  11. CVE-2011-2110: Adobe Flash Player ActionScript Function Variable Arguments Information
  12. CVE-2011-0628: Adobe Flash Player Remote Integer Overflow Code Execution
Read More...

29/09/11

Apple blocks malware-as-PDF threat but new attack emerges

Summary: Even as Apple adds detection to block a Mac OS X malware threat, researchers find new Mac malware posing as a legitimate Flash Player installation package.


Apple has quietly added detection for the recent malware attack that used PDF files as lures to trick Mac OS X users into downloading a malicious Trojan dropper. 

The detection was added into the rudimentary XProtect.plist malware blocker built into Mac OS X.

The malware, flagged as a trojan dropper, installs downloader component that downloads a backdoor program onto the system, while camouflaging its activity by opening a PDF file to distract the user.

However, in what has become a classic cat-and-mouse game, researchers have spotted a new Mac malware threat posing as a legitimate Flash Player installation package.

Researchers find Mac OS X malware posing as PDF file ]

Intego explains the characteristics of the new threat:

Users visiting certain malicious websites may see a link or an icon to download and install Flash Player. Since Mac OS X Lion does not include Flash Player, some users may be fooled and think this is a real installation link. When they click the link, an installation package downloads, and, if the user is using Safari as their web browser, the Mac OS X Installer will launch. (Safari considers installer packages, with .pkg or .mpkg extensions, to be “safe” files and will launch them after download, if default settings are used.)

If the user proceeds with the installation procedure, the installer for this Trojan horse will deactivate some network security software, Intego said.

After installation, [it] will delete the installation package itself. The malware installs a dyld (dynamic loader) library and auto-launch code, allowing it to inject code into applications the user launches. This code, installed in a file at ~/Library/Preferences/Preferences.dylib, connects to a remote server, and sends information about the infected Mac to this server: this includes the computer’s MAC address, a unique identifier. This will allow the malware to detect if a Mac is infected.

The company said it has spotted this new malware in the wild but notes that it is not widely distributed.
Read More...

27/09/11

New Mac Trojan Pretends to Be Flash

Mac malware is still quite rare, but there is one new threat floating around that you should be aware of. A new Trojan for Mac OS X disquises itself as an installer for the Adobe Flash Player browser plug-in, according to security software company Intego. The good news (if you want to call it that)? This new malware doesn't appear to have spread very far as of yet.

According to Intego, this Trojan spreads via malicious sites that feature links asking you to download Flash Player (recent versions of Mac OS X don't come with Flash Player pre-installed). Instead of being taken to the Adobe Flash site when clicking the link, you'll inadvertantly download the Trojan instead. The Trojan looks and acts like any typical Mac installer package--in fact, if you have the "Open 'safe' files after downloading" box checked in Safari, the installer will open automatically.

Intego is still trying to learn more about this particur Trojan, but the company says that "the installer for this Trojan horse will deactivate some network security software, and, after installation, will delete the installation package itself." From there, the Trojan "installs a dyld (dynamic loader) library and auto-launch code, allowing it to inject code into applications the user launches." Put in English, it basically turns good apps bad by making them run malicious tasks.

The malware then gathers information about your Mac, including its MAC address, and sends it to a server, which, according to Intego, "will allow the malware to detect if a Mac is infected."

But there's no need to panic: Intego says they've received only one report of this malware in the wild, so as of right now, this particular Trojan doesn't appear to have spread very far.

To keep it from spreading further, and to keep from becoming its next victim, there are a couple steps you can take. First, only download and install the version of Flash available directly from Adobe. Not only does it ensure that you'll get the real thing, but it ensures that you'll get the latest version, complete with the newest security fixes.

Also, if you use Safari, select Preferences from the Safari menu, click General, then un-check the box labeled "Open 'safe' files after downloading". This will prevent installers and other files (images, text documents, etc...) from opening automatically when you download them. In addition, don't open any downloads that you weren't expecting--this will prevent you from being taken advantage of by so-called drive-by downloads and other threats.

nb : pcworld
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23/09/11

Researchers find Mac OS X malware posing as PDF file

Summary: The malware installs a backdoor that contacts a remote server for instructions and can be used to steal files or capture a screenshot of the infected computer system.


Researchers at F-Secure have discovered a Mac OS X malware file masquerading as a PDF file to lure users into installing a backdoor trojan.

The malware, flagged as a trojan dropper, installs downloader component that downloads a backdoor program onto the system, while camouflaging its activity by opening a PDF file to distract the user.

According to F-Secure, the PDF file contains Chinese-language text related to political issues, which some users may find offensive.

The use of a PDF file as a social engineering gimmick is widely used by malicious hackers on the Windows platform and F-Secure’s research team believes this is an attempt to copy the trick of opening a PDF file containing a “.pdf.exe” extension and an accompanying PDF icon.
 
“”The sample on our hand does not have an extension or an icon yet. However, there is another possibility. It is slightly different in Mac, where the icon is stored in a separate fork that is not readily visible in the OS. The extension and icon could have been lost when the sample was submitted to us. If this is the case, this malware might be even stealthier than in Windows because the sample can use any extension it desires,” the company said.


Once installed, the trojan dropper installs a backdoor program that gives a hacker full control of the infected Mac OS X machine.

The backdoor typically contacts a remote server for instructions and can be used to steal files or capture a screenshot of the infected computer system, which is then forwarded to the remote server.

F-Secure reports that the command-and-control of the malware is just a bare Apache installation that is not yet capable of communicating with the backdoor.

nb : zdnet
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Adobe adding security, privacy goodies to Flash Player 11

Summary: Adobe’s new Flash Player 11 will include support for 64-bit exploit migitation and support for SSL socket connections.


Battling to cope with the hacker bullseye on its back, Adobe plans to add new security and privacy features to the next iteration of its ubiquitous Flash Player, including  support for SSL socket connections and the introduction of 64-bit ASLR (Address Space Layout Randomization).

Adobe said the new Flash Player 11, expected in early October, will include the SSL socket connection support to make it easier for developers to protect the data they stream over the Flash Player raw socket connections.

Adobe to rush out Flash Player patch to thwart zero-day attacks ]

Flash Player 11 will also include a secure random number generator.

Adobe’s Platform Security Strategist Peleus Uhley explains:
Flash Player previously provided a basic, random number generator through Math.random. This was good enough for games and other lighter-weight use cases, but it didn’t meet the complete cryptographic standards for random number generation. The new random number generator API hooks the cryptographic provider of the host device, such as the CryptGenRandom function in Microsoft CAPI on Windows, for generating the random number. The native OS cryptographic providers have better sources of entropy and have been peer reviewed by industry experts.

Adobe admits to 80 'code changes' in Flash Player patch ]

The company is also adding 64-bit support in Flash Player 11, a move that Uhley says will bring some security side-benefits.

If you are using a 64-bit browser that supports address space layout randomization (ASLR) in conjunction with the 64-bit version of Flash Player, you will be protected by 64-bit ASLR. Traditional 32-bit ASLR only has a small number of bits available in the memory address for randomizing locations. Memory addresses based on 64-bit registers have a wider range of free bits for randomization, increasing the effectiveness of ASLR.

On the privacy side, Adobe is adding a private browsing mode to allow users to stay incognito while viewing Flash files.   A mobile control panel is also being added to Android devices to easier for users to manage their Flash Player privacy settings on their Android devices. Read More...

22/09/11

Adobe Releases Out-of-Band Patch

Adobe released an out-of-band security update to address six critical vulnerabilities, all affecting Adobe Flash Player.

One of the six, a cross-site scripting vulnerability identified as CVE-2011-2444, is reportedly being exploited in the wild. The bug is reportedly being used in targeted attacks that involve malicious links sent out to targets through email messages.

Adobe attributed the discovery of CVE-2011-2444 to Google, who, in response to finding the vulnerability, issued an update for the Google Chrome browser to prevent attackers from exploiting the security hole.

Users are strongly advised to apply the patches as soon as possible, especially since exploiting any the addressed vulnerabilities can lead to either remote code execution, or information disclosure.

Note that users who utilize multiple browsers may need to update their other browsers separately. Users can visit this page through all their browsers to check if they have the latest version of Adobe Flash Player installed, and this page to update. Here is the list of Adobe Flash Player versions affected by vulnerabilities addressed in this update:

  • Flash Player 10.3.183.7 and earlier
  • Flash Player 10.3.183.7 and earlier for network distribution
  • Flash Player 10.3.186.6 and earlier for Android
  • Flash Player 10.3.183.7 and earlier for Chrome users
We will update this post once we find more information about the exploit.

nb : trendmicro Read More...

Urgent: Patch Adobe Flash to Protect against Zero-Day Exploit

Adobe issued a critical update today for its Flash Player software. The patch fixes six security vulnerabilities, at least one of which is a zero-day vulnerability being actively exploited in the wild.

The details of the Adobe security bulletin explain, "This update resolves a universal cross-site scripting issue that could be used to take actions on a user's behalf on any website or webmail provider if the user visits a malicious website (CVE-2011-2444)," adding, "Note: There are reports that this issue is being exploited in the wild in active targeted attacks designed to trick the user into clicking on a malicious link delivered in an email message."

Adobe Flash zero-day flawPatch Adobe Flash now to guard against zero-day exploit.The zero-day bug fixed today is similar to a flaw in Flash that was patched in June. Coincidentally, both the June vulnerability, and this one patched today were reported to Adobe by Google.

I have not seen any official indication that the Flash zero-day had anything to do with the Diginotar hack that compromised digital certificates used to authenticate websites as legitimate--but the timing seems about right.

Just as flaws in the ubiquitous Adobe Flash were exploited to infiltrate RSA Security and compromise the encryption keys used in RSA's SecurID two-factor authentication tokens, Flash may also have been the Achilles heel of Diginotar.
Adobe Flash is nearly universal. With Adobe Flash Player software and browser plug-ins available for virtually every operating system and browser, this zero-day flaw could potentially impact 90 to 95 percent of the PCs in the world.

Andrew Storms, director of security operations for nCircle, connects the dots. "Adobe said that today’s bug 'could be used to act on the user's behalf with webmail providers.' I think we can interpret this to mean that a successful attack using this zero-day bug could allow the attacker to access the user's Gmail account."

Storms implores, "It’s time for all IT teams to circle the wagons and patch Flash as soon as possible."

I'll see Storms' "IT teams", and raise him an "everyone who uses Flash". Go download and install the Adobe Flash update now.

nb : pcworld Read More...

September Adobe Flash update patches critical vulnerabilities

Adobe Flash logoAdobe has just released an update (APSB11-26) to its ubiquitous Flash software, revving it to version 10.3.183.10 for Windows, Mac, Solaris and Linux, and to version 10.3.186.7 for Android.

Today's release fixes six vulnerabilities in Flash Player, one of which was being used in targeted attacks (CVE-2011-2444). This bug is a cross-site scripting flaw which could allow malicious web pages to take actions on behalf of the logged in user.

Adobe has rated this update as Critical. SophosLabs has assigned it a High rating.
SophosLabs has yet to see any samples in the wild, and notes that CVE-2011-2444 is not straightforward to exploit. Nevertheless, as Adobe reports, this vulnerability has been exploited, albeit only in targeted attacks so far.

Windows, Mac, Solaris and Linux users can download the latest Flash player from http://get.adobe.com/flashplayer.

Do watch out though. If adding the bloat of Flash to your browsing experience isn't enough for you, Adobe has decided to default to bundling it with the Google Toolbar or McAfee trialware for Windows users.

Adobe Flash Player download page

You can untick the box before downloading if you don't want these options.
Maybe that's why Apple won't support Flash on iDevices. No portable versions of Google Toolbar or McAfee?

Android users can download the latest Flash Player from the Android Marketplace and Google Chrome users were automatically updated on September 20, 2011 with protection against these flaws.

nb : nakedsecurity.sophos
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SSCC 73 - Patch Tuesday, UBS, SpyEye, Twit.tv and Windows 8

Sophos Security Chet Chat logoI was very happy to have Paul Ducklin, Sophos's Head of Technology, Asia Pacific, as my guest again this week.

Paul joined me amidst what he referred to as a Denial of Service (DoS) attack at the security checkpoint of Sydney airport.

Paul shared his thoughts on the September 2011 Patch Tuesday release from Microsoft and Adobe (Hint: if you have to prioritize, start with Adobe.)

We chatted a bit about the guy who lost more than £2.3 billion as a trader for UBS bank. If they can't keep track of £2.3 billion, are they taking proper care of our personally identifiable information?

It appears SpyEye is following in the Zeus bot's footsteps and is beginning to target mobile banking users on Android who use their phone as a second factor for authentication. Paul explains the social engineering aspects of this malware.
One of the most popular tech podcast/vodcast sites, Twit.tv, run by Leo LaPorte was hacked this week. The malware targeted unpatched versions of Adobe Reader and Java. Remember, there is no such thing as safe surfing.

I asked Paul what he thought about the news that Microsoft will be including a free unmanaged anti-virus program in Windows 8.

He talked a bit about patching in general, and was upbeat that users who care to keep themselves up to date could definitely benefit.


nb : nakedsecurity.sophos
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Adobe to rush out Flash Player patch to thwart zero-day attacks

Summary: Another in-the-wild zero-day attack prompts an urgent Flash Player patch from Adobe.
Adobe is planning to rush out a critical Flash Player patch later today (September 21, 2011) to fix security holes that are being used in targeted zero-day attacks.

According to Adobe, the Flash Player update will address critical security issues in the product as well as an importantuniversal cross-site scripting issue that is reportedly being exploited in the wild in targeted attacks.

The company is expected to fix at least 16 documented vulnerabilities, some critical enough to expose Windows and Mac users to code execution attacks via Flash files hosted on Web pages.

The Adobe patch comes a day after Google shipped a Chrome update that “includes an update to Flash Player that addresses a zero-day vulnerability.”
Details on the targeted zero-day attacks are not yet available but it’s clear these types of attacks are happening at a very high level.

Just this week at the United Security Summit, Adobe security chief Brad Arkin said the company’s main adversaries are state-sponsored actors.
From Threatpost’s Dennis Fisher:


“In the last eighteen months, the only zero days found in our software have been found by what Dave Aitel would call carrier-class adversaries,” Arkin said in his keynote speech at the United Security Summit here Tuesday. “These are the groups that have enough money to build an aircraft carrier. Those are our adversaries.”

Arkin said that when a new attack involving a zero-day bug in one of Adobe’s products starts, it typically will begin with attacks against a select group of high-profile organizations. That usually means defense contractors, government agencies or large financial services companies. Once the security teams at those organizations find and analyze the threat, Arkin said his team will begin getting a flurry of calls within an hour or two as the campaign hits.
From there, the attack will often then move down the ladder to other large enterprises and then smaller ones as the new exploit shows up in crimeware packs and automated attack tools. By that time, it’s likely an entirely different set of attackers using the exploit. But it’s the well-funder and highly skilled attackers who are doing the real heavy lifting in terms of finding new bugs and designing methods to exploit them.

“These samples trickle downhill really quickly and show up in crime packs,” Arkin said. “The actual exploits it turns out are very, very expensive and difficult to build. Finding the flaw is a lot easier than writing the exploit. If you want to defend against the carrier-class adversary, it’s a very different cost.”

In addition to Flash Player, Adobe’s PDF Reader and Acrobat software products are among the main targets for sophisticated attacks.

nb : zdnet
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21/09/11

Adobe readies critical security patch for Flash Player

Adobe Flash patchBe nice to the guys in your IT department on Wednesday, as they will be (hopefully) rolling out a critical security patch for Adobe Flash in order to make your computers safer.

Adobe has pre-announced that it has scheduled a Flash Player critical security update for sometime today, Wednesday 21 September.

According to a brief statement by the company, the update will address
"critical security issues in the product as well as an important universal cross-site scripting issue that is reportedly being exploited in the wild in targeted attacks."
Serious stuff, and every internet user (well, those who use Flash - so owners of iPhones and iPads can relax) would be wise to ensure that they update their computers as soon as possible once the patch is released.

For the latest information, make sure to keep an eye on the Adobe PSIRT blog.

nb : nakedsecurity.sophos
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Nation-State Attackers Are Adobe's Biggest Worry

Adobe SAN FRANCISCO--It's no secret that attackers have made Adobe's products key targets for the last couple of years, routinely going after bugs in Reader, Flash and Acrobat in targeted attacks and widespread campaigns alike. But it's not just the rank-and-file bad guys who are making Adobe a priority; it's more often nation-states, the company's top security official said.

Adobe, like many other large software companies, has contacts in the big defense contractors, government agencies and other organizations that are most often the targets of state-sponsored attacks. So when a new attack begins, the company typically hears about it within hours as customers begin to call and report a new threat involving an Adobe product. Since the company began its software security program several years ago, the sophistication level of the people finding and exploiting new bugs in Flash or Reader has gone up significantly.

Now, says Brad Arkin, the senior director of product security and privacy at Adobe, it's at a point where the company's main adversaries are state-sponsored actors.

"In the last eighteen months, the only zero days found in our software have been found by what Dave Aitel would call carrier-class adversaries," Arkin said in his keynote speech at the United Security Summit here Tuesday. "These are the groups that have enough money to build an aircraft carrier. Those are our adversaries."

Arkin said that when a new attack involving a zero-day bug in one of Adobe's products starts, it typically will begin with attacks against a select group of high-profile organizations. That usually means defense contractors, government agencies or large financial services companies. Once the security teams at those organizations find and analyze the threat, Arkin said his team will begin getting a flurry of calls within an hour or two as the campaign hits.

From there, the attack will often then move down the ladder to other large enterprises and then smaller ones as the new exploit shows up in crimeware packs and automated attack tools. By that time, it's likely an entirely different set of attackers using the exploit. But it's the well-funder and highly skilled attackers who are doing the real heavy lifting in terms of finding new bugs and designing methods to exploit them.

"These samples trickle downhill really quickly and show up in crime packs," Arkin said. "The actual exploits it turns out are very, very expensive and difficult to build. Finding the flaw is a lot easier than writing the exploit. If you want to defend against the carrier-class adversary, it's a very different cost."

Perhaps the most famous example of this kind of targeted attack is the one that hit RSA Security earlier this year. In that case, the company was compromised through the use of a phishing email that contained an Excel file with a malicious SWF file embedded inside it. An employee opened the email and then the attachment and the attack was off and running from there. Arkin said that while his team didn't get a sample of the malicious file from RSA, it did see others from organizations that likely were targeted by the same campaign.

"We have lots of friends in the places where people get attacked a lot and I don't think that RSA was the only target in that campaign," he said.

nb : threatpost Read More...

16/09/11

Microsoft patches 15 important vulnerabilities

This month, Microsoft issued 5 security bulletins covering 15 vulnerabilities in Excel and Windows. These updates are considered important rather than critical, as by the time of the patch there was no malicious code exploiting the vulnerabilities in the wild. Adobe also released a security bulletin patching 13 vulnerabilities in Acrobat Reader. Websense® Security Labs highly recommends applying the updates in order to avoid cyber criminals who may use these security holes for their malicious activities.

Arguably the most important bulletin is MS11-072, which targets five different vulnerabilities in Microsoft Office. An attacker could use any of these to execute arbitrary code on the computer with the same access rights as the user. This is a focus for any security researcher as hackers are constantly looking for newer ways to distribute their badware. Such issues are probably getting more and more headlines as Adobe's sandboxing system and regular security patches seem to be paying off, meaning an up-to-date system is much less prone to successful exploits by vulnerabilities in PDFs.

This does not mean, of course, that we will see no more vulnerabilities in Acrobat Reader. This Tuesday Adobe Issued a security bulletin too, fixing 13 vulnerability issues in their product. Each of the vulnerabilities could allow an attacker to execute a code on the host computer allowing them to take full control of it. This patch is rated as critical, therefore it is strongly recommended to apply it.



Also worth mentioning is that many companies have updated their DigiNotar certificates - Microsoft, Adobe, and even Mozilla Firefox issued the updates. Firefox even released an additional security patch targeting this issue. Please check that you have applied the latest updates so you are fully protected.

Is your organization using the latest Firefox 6 or Internet Explorer 9? Which one did you find more secure? Give us your thoughts in the comments.

Vulnerabilities patched by Microsoft on 13 September 2011:
MS11-070 WINS Local Elevation of Privilege Vulnerability (CVE-2011-1984)
MS11-071 Windows Components Insecure Library Loading Vulnerability (CVE-2011-1991)
MS11-072 Excel Use after Free WriteAV Vulnerability (CVE-2011-1986)
MS11-072 Excel Out of Bounds Array Indexing Vulnerability (CVE-2011-1987)
MS11-072 Excel Heap Corruption Vulnerability (CVE-2011-1988)
MS11-072 Excel Conditional Expression Parsing Vulnerability (CVE-2011-1989)
MS11-072 Excel Out of Bounds Array Indexing Vulnerability (CVE-2011-1990)
MS11-073 Office Component Insecure Library Loading Vulnerability (CVE-2011-1980)
MS11-073 Office Uninitialized Object Pointer Vulnerability (CVE-2011-1982)
MS11-074 XSS in SharePoint Calendar Vulnerability (CVE-2011-0653)
MS11-074 HTML Sanitization Vulnerability (CVE-2011-1252)
MS11-074 Editform Script Injection Vulnerability (CVE-2011-1890)
MS11-074 Contact Details Reflected XSS Vulnerability (CVE-2011-1891)
MS11-074 SharePoint Remote File Disclosure Vulnerability (CVE-2011-1892)
MS11-074 SharePoint XSS Vulnerability (CVE-2011-1893)

Vulnerabilities patched by Adobe on 13 September 2011:
Local privilege-escalation vulnerability (Adobe Reader X (10.x) on Windows only) (CVE-2011-1353).
Security bypass vulnerability that could lead to code execution (CVE-2011-2431).
Buffer overflow vulnerability in the U3D TIFF Resource that could lead to code execution (CVE-2011-2432).
Heap overflow vulnerability that could lead to code execution (CVE-2011-2433).
Heap overflow vulnerability that could lead to code execution (CVE-2011-2434).
Buffer overflow vulnerability that could lead to code execution (CVE-2011-2435).
Heap overflow vulnerability in the Adobe image parsing library that could lead to code execution (CVE-2011-2436).
Heap overflow vulnerability that could lead to code execution (CVE-2011-2437).
Stack overflow vulnerabilities in the Adobe image parsing library that could lead to code execution (CVE-2011-2438).
Memory leakage condition vulnerability that could lead to code execution (CVE-2011-2439).
Use-after-free vulnerability that could lead to code execution (CVE-2011-2440).
Stack overflow vulnerabilities in the CoolType.dll library that could lead to code execution (CVE-2011-2441).
Logic error vulnerability that could lead to code execution (CVE-2011-2442).

Websense Security Labs and our ThreatSeeker Network are constantly monitoring for these threats occurring in the wild.

nb : websense Read More...

14/09/11

Microsoft, Adobe Unleash Flood of Security Updates

Malware alertToday is Patch Tuesday again. The ninth of the year already. Microsoft has released five new security bulletins, and Adobe has joined the party with some security patching of its own today. With all of the vulnerabilities and updates, though, you need to take a step back to prioritize and figure out which patches are most urgent.

Actually, today is a bit anti-climactic. Due to human error the full security bulletins were made public briefly on Friday, so there has already been a four-day heads up of what to expect. But, now that the security bulletins and associated patches are legitimately public, it's time to take a closer look.
With five Microsoft security bulletins, and 13 updates from Adobe it's a busy week for IT admins.Five security bulletins isn't the lightest month ever, but it is far fewer than some of the Patch Tuesday avalanches we have seen. What is even more unique is that none of the five security bulletins are rated as Critical. All five of the bulletins--MS11-070 through MS11-074--are all rated Important.

"Although none of this month's patches are rated critical, we strongly urge users to pay extra close attention to the Office Uninitialized Object Pointer Vulnerability," said Joshua Talbot, Security Intelligence Manager for Symantec Security Response. "It seems to be a fairly easy to exploit memory corruption issue and leverages extremely common Word files to attack users' computers."
Tyler Reguly, Technical Manager for Security Research and Development at nCircle, explains, " If you're prioritizing bulletins today, it's pretty simple: Excel (MS11-072) comes first, followed by the rest. Some of the more interesting patches (Sharepoint and WINS) only apply to certain software configurations."
Talbot also stresses, though, "Despite the number of patches Microsoft issued today, it's important to not let the out of band advisory Microsoft updated last week slip through the cracks. The advisory essentially revokes Microsoft's trust of various DigiNotar certificates."

Andrew Storms, Director of Security Operations for nCircle concurs on the urgency of the DigiNotar trust revocation. "Microsoft continues its effort to be vigilant about the DigiNotar certificates and is releasing another DigiNotar update. This time it is 'nuking' more certificates related to DigiNotar, specifically ones that were cross-signed by other certificate authorities. Anything and everything associated with DigiNotar is getting purged."

Symantec's Talbot urges, "This update should probably be kept at the top of IT admins' to-do lists--even before any of today's patches-- as there are attacks occurring in the wild leveraging the compromised certificates."
The Microsoft Patch Tuesday is overshadowed to some extent by Adobe's security patch release.

Storms cautions, "In what might be a first time event, Adobe released a batch of 13 CVE's early this morning before the Microsoft patch. It's a definitely improvement over their previous late afternoon releases, but it's still a ‘classic' Adobe patch in that we have very little information about the bugs being fixed in the patch. The bad news is that most of them could result in the worst kind of security outcome--remote code execution."

Make sure you check out the patches released by Microsoft and Adobe today and apply the appropriate updates to protect your systems.

nb : pcworld Read More...