Tag Archive | Linux

Steam Gamers Listen Up: Platform Vulnerable to Remote Exploits, 50M at risk

50 million users plus of the Steam gaming and distribution platform are at risk for remote exploits because of vulnerabilities in the platform’s URL protocol handler, researchers at ReVuln wrote in a paper released.

According to ThreatPost, Luigi Auriemma and Donato Ferrante discovered a number of memory corruption issues, including buffer and heap overflows that would allow an attacker to abuse the way the Steam client handles browser requests. Steam runs on Windows, Linux and Mac OSX.

The steam:// URL protocol is used to connect to game servers, load and uninstall games, backup files, run games and interact with news, profiles and download pages offered by Valve, the company that operates the platform. Attackers, Auriemma and Ferrante said, can abuse specific Steam commands via steam:// URLs to inject attacks and run other malicious code on victim machines.

Read more on the ThreatPost blog

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Adobe Releases Subsequent Updates for 6 Flaws

New releases of update from Adobe come a week after their recent release, which was critical. Having subsequent updates for critical flaws begs the question of whether or not Flash Player is safe. Looks as if AIR was affected, as well. This patching closes six vulnerabilities, helping to safeguard against hackers.

These platforms are affected, and now have a patch available for download:

  • Windows (New update: 11.4.402.265)
  • Mac (New update: 11.4.402.265)
  • Linux (New Update)
  • Android (New Update)

The customized Google Chrome version (Pepper) should be automatically update to version for PC and 11.4.402.265 for Mac.

For Windows and Mac users, bear in mind the new Adobe AIR, which you should include with your updates for Flash Player.

Last week’s update included a critical flaw (CVE-2012-1535) in Adobe Flash Player.

For this week’s update, it fixes the following, according to Adobe:

  • These updates resolve memory corruption vulnerabilities that could lead to code execution (CVE-2012-4163, CVE-2012-4164, CVE-2012-4165, CVE-2012-4166).
  • These updates resolve an integer overflow vulnerability that could lead to code execution (CVE-2012-4167).
  • These updates resolve a cross-domain information leak vulnerability (CVE-2012-4168).


Report: Nvidia Fixes Unix Driver, Addresses Vulnerability

Graphics chip maker Nvidia released a new version of its Unix driver on Friday in order to address a high-risk vulnerability that can be exploited by local users to gain root privileges on Linux systems.

The privilege escalation vulnerability fixed in the new 304.32 version of the Nvidia Unix driver 304.32 was publicly disclosed last Wednesday by Dave Airlie, a principal engineer in the graphics team at Linux vendor Red Hat.

The public disclosure was done at the request of an anonymous researcher who originally discovered the flaw and after Nvidia failed to respond to a private report about the vulnerability, Airlie said in an email sent to the Full Disclosure mailing list.

Airlie’s message also included proof-of-concept exploit code created by the anonymous researcher to demonstrate the vulnerability.

Read More on Computer World

New Trojan Malware Targets All Platforms

Most malware analysis these days targets Windows machines. However, trojans are becoming more interesting. Hackers create these trojans, and want to get backdoor access to any machine.

Trojan malware has stepped up game. Hackers want more access, so trojans are being created to target multiple platforms. Imagine the payload of a trojan being targeted to Windows, Mac, and Linux.

Due to recent discoveries of this multi-platform malware in a Columbian Transport site. A JAR (java archive) is used to detect what OS the user is running, and then the trojan is sent to infect the specific OS. And of course, this is all too similar to the Boonana Worm. Or how about the first cross-platform worm: Badbunny. Yeah, not so dumb now.

Keep an eye out or ear open for the latest in multi-platform malware. Predictions show that this will be an ongoing problem. Good thing we’ve nipped it in the bud. But, of course, studying all of the latest new threats is a key target here at seCURE Connexion.

One of the main things we look for in malware now has to do with whether or not it is multi-platform. If it has different inferences for different platforms, we want to discover it.

Also, one thing to keep in mind, that this is also a way to exploit Java by using it to gain temporary access to the operating system in question, and then gaining permanent access afterward by infecting the system. It’s an exploit-in-depth process to make sure each exploit is targeted at the said platform.

Web-based malware is also increasing, and languages like Ruby, Java, and Flash are all at risk. Since they are web-based languages, they need to be watched for vulnerabilities much closer than basic software languages, such as C++, C#, Delphi, etc.

What is even more interesting is the factors it uses to infect the system as well. Exploit traps work best, when they evade antivirus programs, know what platform they will be working on, and if the vulnerability exists to conduct the exploit. This is what we call “exploit-in-depth” (EID).

How can we counter this EID? By conducting defense-in-depth control over our computers. No matter the type of OS you have, the danger for malware will lurk around.

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