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WatchGuard Live Security Service: Two New Zero Day Adobe Reader Exploits

SEVERITY: HIGH
28 April, 2009
SUMMARY:
  • This vulnerability affects: Adobe Reader and Acrobat 9.1 and earlier, on Windows, Mac, *nix computers
  • How an attacker exploits it: By enticing your users into viewing a maliciously crafted PDF document
  • Impact: An attacker can execute code on your computer, potentially gaining control of it
  • What to do: Implement the workarounds described in the Solutions section of this alert
EXPOSURE:
Yesterday, SecurityFocus released an advisory describing a new zero day Adobe Reader exploit they found in the wild. The Proof of Concept (PoC) exploit — written by some calling himself “Arr1val” — seems to leverage a flaw in the Adobe Reader function called “getAnnots()”. As it turns out, Arr1val released two new zero day exploits. The second exploit leverages another Adobe Reader function called “spell.customDictionaryOpen().” Arr1val’s code suggests he confirmed these flaws using Adobe Reader 9.1 and 8.1.4 for Linux. However, we suspect the flaws may affect all current versions of Reader running on any platform.
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