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Java/IE 0days Put to Bed

Posted January 14, 2013    BeyondTrust Research Team

Over the past two days, two actively exploited 0day vulnerabilities got patched. Yesterday, Oracle addressed the 0day in Java, CVE-2013-0422, with an new update, Java 7u11. Today, Microsoft addressed the 0day in Internet Explorer 6-9, CVE-2012-4792, with MS13-008.

In addition to fixing the 0day vulnerability, the Java update changes the default security level setting from medium to high. This means that users will be prompted before running unsigned or self-signed Java applets or Java Web Start applications are run. With this update, silent exploitation will no longer be an option to attackers when using unsigned or self-signed Java code for exploitation. Now, if attackers choose to exploit Java vulnerabilities, even more social engineering will be required since users will need to not only open a malicious web page, but they will also need to click past the new security prompt prior to being exploited.

The code signing mechanism for Java code uses some of the principles as code signing used in app stores, such as the Windows 8 App Store or the Mac App Store. Code signing is a requirement in the app stores, while signing Java code merely prevents an alert shown to the user, but the choice to even show an alert is a step in the right direction for Java. To verify that a piece of software really was made by the author, a digital signature is applied to the software that is then run on the user’s system. With this security update from Oracle, attackers will need to either use a fraudulent certificate or acquire the ability to sign code on behalf of another entity, similar to what has been seen with certificate authorities like DigiNotar and Comodo being compromised for the same purpose. While a barrier is now posed to the attacker, users love clicking buttons, so it won’t stop determined users from being exploited. In any case, it will be easier to handle malware by simply revoking the fraudulent certificates, assuming Java properly leverages certificate revocations.

Needless to say, since these patches address vulnerabilities being exploited in the wild, it is critical that the patches are deployed as soon as possible.

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Failing the Security Basics: Backoff Point-of-Sale Malware

Posted August 22, 2014    Marc Maiffret

At the beginning of this month, US-CERT issued a security alert relating to a string of breaches that had been targeting Point of Sale (POS) systems. The alert details that attackers were leveraging brute forcing tools to target common remote desktop applications such as Microsoft’s Remote Desktop, Apple Remote Desktop, Splashtop and LogMeIn among others….

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Troubleshooting Windows Privilege Management Rules with Policy Monitor

Posted August 21, 2014    Jason Silva

When defining and testing PowerBroker for Windows rules for production or pilots, customers sometimes tell us, “I don’t think this policy / program is working.” This is usually a case of the policy not properly triggering because of the way the rule was created. A unique feature of PowerBroker for Windows compared to other solutions is a client-side…

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BeyondTrust Webcast: Darren Mar-Elia’s 4 Active Directory Change Scenarios to Track

Posted August 20, 2014    Chris Burd

In our latest webcast, we joined Darren Mar-Elia, CTO at SDM Software, to discuss best practices for Active Directory (AD) change management. Here are some key takeaways from the presentation, followed by a link to a full-length video of the presentation. Mar-Elia kicks things off with a critical insight: that the best AD change management…

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