ALZip Multiple Archive Handling Buffer Overflow

2005.10.05
Risk: High
Local: No
Remote: Yes
CWE: CWE-119


CVSS Base Score: 7.5/10
Impact Subscore: 6.4/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: Partial

====================================================================== Secunia Research 05/10/2005 - ALZip Multiple 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 ALZip v6.12 (Korean) ALZip v6.1 (International) ALZip v5.52 (English) 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 ALZip, which can be exploited by malicious people to compromise a user's system. The vulnerability is caused due to multiple boundary errors when reading the filename of a compressed file from ALZ, ARJ, ZIP, UUE or XXE archives. This can be exploited to cause a stack-based buffer overflow (ALZ), or a heap-based buffer overflow (ARJ / ZIP / UUE / XXE). Successful exploitation allows execution of arbitrary code when a malicious ALZ / ARJ archive is opened, or when a ZIP / UUE / XXE archive is extracted. ====================================================================== 4) Solution Update to version 6.13 (Korean and International) ====================================================================== 5) Time Table 19/09/2005 - Initial vendor notification. 20/09/2005 - Initial vendor reply. 28/09/2005 - Notified by vendor that fixed version has been released. 05/10/2005 - 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/2005-49/advisory/ Complete list of vulnerability reports published by Secunia Research: http://secunia.com/secunia_research/ ======================================================================


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