Adobe confirms new zero-day Flash bug
Patches Google-reported XSS flaw hackers now exploiting in targeted attacks
Computerworld - Adobe on Wednesday patched seven critical vulnerabilities in Flash Player, including one reported by Google researchers that hackers are using in "active targeted attacks." The bug attackers have been exploiting is a cross-site scripting (XSS) flaw in the Flash Player plug-in used by Microsoft's Internet Explorer (IE).
"This update resolves a universal cross-site scripting vulnerability that could be used to take actions on a user's behalf on any website or Web mail provider, if the user visits a malicious website," read the Adobe security advisory that accompanied yesterday's Flash update. "There are reports that this vulnerability 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."
The attack only works against IE.
Adobe said the other six vulnerabilities, all rated critical like the XSS bug, were memory corruption flaws or security bypass bugs that "could cause a crash and potentially allow an attacker to take control of the affected system."
Google was credited with notifying Adobe of the XSS vulnerability, but Adobe did not note when Google filed the bug report or how long attackers have been exploiting the bug.
To patch the vulnerabilities, Adobe updated Flash Player 11 and Flash Player 10 on Windows, Mac OS X, Linux and Solaris, and Flash Player on Android.
Also on Wednesday, Google updated Chrome to offer the newly-patched Flash to its users. Google has packaged Flash Player with Chrome since April 2010, and remains the only browser that contains its own copy of Flash Player.
Last week, Adobe confirmed that its next target for a "sandboxed" Flash Player would be the plug-in for Internet Explorer. But Adobe confirmed that even if the defense had been in place, the active attacks exploiting the just-patched XSS vulnerability would still have succeeded.
"The universal [XSS] vulnerability breaks the same-origin security model in the browser and allows the attacker to 'make clicks' on behalf of the user in a way that is normally not allowed," said Adobe spokeswoman Wiebke Lips in an email reply to questions. "All of this activity occurs within the browser context, so running the browser in a low-rights sandbox would not change the behavior of the attack. Even if we had a rock-solid sandbox in place for Flash Player on Internet Explorer, this vulnerability could have been exploited the same way."
Adobe finished a sandboxed Flash for Chrome in 2010, and has just launched a beta of sandboxed Flash for Mozilla's Firefox on Windows Vista and Windows 7.
Wednesday's Flash update was the first this year for the media player, but the software has required aggressive patching: In 2011, Adobe fixed Flash flaws nine different times.
- Troubleshooting Common Issues in VoIP Learn more about Voice over Internet Protocol (VoIP), including common VoIP metrics used, best practices in VoIP management and tips and tricks for...
- 2013 Network Management Software (NMS) Buyers Guide This white paper contains an independent comparison study of six different network management solutions and provides guidance on how you can choose the...
- Rightsizing Your Network Performance Management Solution: 4 Case Studies This white paper discusses challenges encountered as organizations search for the most cost-effective network performance management solution.
- Global Growing Pains: Tapping into B2B Integration Services to Overcome Global Expansion Challenges A recent survey by IDG Research explored both the challenges and pain points companies face when growing globally, as well as the capabilities...
- E-Signature RFP Checklist Webcast If your organization is looking to adopt e-signatures, you may be overwhelmed by the number of providers that offer seemingly similar solutions. How...
- Cloud and Collaboration: Driving Your Business Value Mission Critical Cloud from Peer 1 Hosting is enterprise-grade. All Security White Papers | Webcasts
Our new bimonthly Internet of Things newsletter helps you keep pace with the rapidly evolving technologies, trends and developments related to the IoT. Subscribe now and stay up to date!