====================================================================== Secunia Research 23/09/2005 - PowerArchiver ACE/ARJ Archive Handling Buffer Overflow - ====================================================================== 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 PowerArchiver 2006 version 9.5 Beta 4/Beta 5 PowerArchiver 2004 version 9.25 PowerArchiver 2003 version 8.60 PowerArchiver 2002 version 8.10 Prior 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 PowerArchiver, which can be exploited by malicious people to compromise a user's system. The vulnerability is caused due to a boundary error when reading the filename of a compressed file from an ACE/ARJ archive. This can be exploited to cause a stack-based buffer overflow when a malicious archive containing a file with an overly long filename is opened. Successful exploitation allows arbitrary code execution. ====================================================================== 4) Solution Update to the fixed versions. PowerArchiver 2004: Update to version 9.26. The vulnerability has also been fixed in PowerArchiver 2006 Beta 6. ====================================================================== 5) Time Table 09/09/2005 - Initial vendor notification. 20/09/2005 - Vendor provided fixed version for testing. 22/09/2005 - Vendor released fixed versions. 23/09/2005 - Public disclosure. ====================================================================== 6) Credits Discovered by Tan Chew Keong, Secunia Research. ====================================================================== 7) References No references available. ====================================================================== 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/2005-50/advisory/ Complete list of vulnerability reports published by Secunia Research: http://secunia.com/secunia_research/ ======================================================================