Adobe Patches Reader Zero Day Used in Targeted Attacks

Adobe released security updates for Reader, Acrobat and Flash Player. The Reader and Acrobat patches address a zero-day vulnerability being exploited in limited targeted attacks.

Adobe today released an out-of-band patch for a zero-day vulnerability in Adobe Reader and Acrobat that has been leveraged in targeted attacks.

Kaspersky Lab Global Research and Analysis Team director Costin Raiu is credited with reporting the vulnerability. Details were not announced, but Raiu said on the Securelist blog that exploits have been observed in a limited number of targeted attacks. Adobe said attackers have been targeting Windows machines running the Reader and Acrobat software.

“At the moment, we are not providing any details on these attacks as the investigation is still ongoing,” Raiu said. “Although these attacks are very rare, just to stay on the safe side we recommend everyone to get the update from the Adobe site as soon as possible.”

Adobe said today’s update patches a vulnerability (CVE-2014-0546) that when exploited allows an attacker to circumvent sandbox protections. Reader and Acrobat for Apple OS X are not vulnerable, Adobe said. Raiu called it “a rather creative sandbox escape.”

Reader and Acrobat versions 11.0.07 and earlier for Windows are affected, Adobe said.

The Reader update is one of two released today by Adobe. The other patches seven vulnerabilities in Flash Player, most of which are rated critical by Adobe.

None of the Flash bugs are being exploited in the wild, Adobe said. Five of the updates patch memory-related vulnerabilities that can be used to bypass memory address randomization, Adobe said. The two remaining patches address a security bypass vulnerability and a use-after-free vulnerability that could allow a hacker to remotely execute code on the underlying system.

Affected versions are:

  • Adobe Flash Player and earlier versions for Windows and Macintosh
  • Adobe Flash Player and earlier versions for Linux
  • Adobe AIR and earlier versions for Windows and Macintosh
  • Adobe AIR SDK and earlier versions
  • Adobe AIR SDK & Compiler and earlier versions
  • Adobe AIR and earlier versions for Android

All of the Flash bugs are rated critical and can lead to code execution.

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