While no patch is ready yet, Adobe has a mitigation approach for the new Adobe Reader and Acrobat Zero Day vulnerabilities undergoing exploitation.
The vulnerabilities (CVE-2013-0640, CVE-2013-0641) are present in Adobe Reader and Acrobat 11.0.01, 10.1.5, 9.5.3 and all their earlier versions for Windows and Macintosh, and allow attackers to compromise the systems of users tricked into opening a malicious PDF file delivered via email, according to security provider FireEye.
Until Adobe issues a fix, users of Reader and Acrobat 11 should enable the Protected View option (File > Edit > Preferences > Security (Enhanced) > choose the “Files from potentially unsafe locations” or “All files” options). Enterprise administrators can do the same for all Windows users across their organization by enabling Protected View in the registry and propagating that setting via GPO or any other method.
When enabled, the Protected View option makes all PDF documents open in a sandbox.
The code is also able to bypass the ASLR and DEP protection, and employs anti-analysis tricks that may allow it to “muddy up” sandbox analysis reports.