====================================================================== Secunia Research 17/05/2006 - IZArc unacev2.dll Buffer Overflow Vulnerability - ====================================================================== Table of Contents Affected Software....................................................1 Severity.............................................................2 Description of Vulnerability.........................................3 Solution.............................................................4 Time Table...........................................................5 Credits..............................................................6 References...........................................................7 About Secunia........................................................8 Verification.........................................................9 ====================================================================== 1) Affected Software * IZArc version 3.5 beta 3. Other versions may also be affected. ====================================================================== 2) Severity Rating: Moderately Critical Impact: System Access Where: Remote ====================================================================== 3) Description of Vulnerability Secunia Research has discovered a vulnerability in IZArc, which can be exploited by malicious people to compromise a user's system. The vulnerability is caused due to a boundary error in UNACEV2.DLL when extracting an ACE archive containing a file with an overly long filename. This can be exploited to cause a stack-based buffer overflow when a user extracts a specially crafted ACE archive. The vulnerability is related to: SA16479 ====================================================================== 4) Solution Do not extract untrusted ACE archives. ====================================================================== 5) Time Table 04/05/2006 - Initial vendor notification. 16/05/2006 - Second vendor notification. 17/05/2006 - Public disclosure. (No reply from vendor) ====================================================================== 6) Credits Discovered by Secunia Research. ====================================================================== 7) References SA16479: http://secunia.com/advisories/16479/ The Common Vulnerabilities and Exposures (CVE) project has assigned CVE-2005-2856 for the vulnerability. ====================================================================== 8) About Secunia Secunia collects, validates, assesses, and writes advisories regarding all the latest software vulnerabilities disclosed to the public. These advisories are gathered in a publicly available database at the Secunia website: http://secunia.com/ Secunia offers services to our customers enabling them to receive all relevant vulnerability information to their specific system configuration. Secunia offers a FREE mailing list called Secunia Security Advisories: http://secunia.com/secunia_security_advisories/ ====================================================================== 9) Verification Please verify this advisory by visiting the Secunia website: http://secunia.com/secunia_research/2006-32/advisory/ Complete list of vulnerability reports published by Secunia Research: http://secunia.com/secunia_research/ ======================================================================