full-disclosure - Secunia Research: 7-Zip ARJ Archive Handling Buffer Overflow

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <1127462959.9567.123.camel@ts2.intnet>
Date: Fri Sep 23 10:24:54 2005
From: vuln at secunia.com (Secunia Research)
Subject: Secunia Research: 7-Zip ARJ Archive Handling
	Buffer Overflow

====================================================================== 

                     Secunia Research 23/09/2005

           - 7-Zip 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 

7-Zip Version 3.13, 4.23, and 4.26 BETA

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 7-Zip, which can
be exploited by malicious people to compromise a user's system.

The vulnerability is caused due to a boundary error when handling an
ARJ block that is larger than 2600 bytes. This can be exploited to 
cause a stack-based buffer overflow when a specially crafted ARJ file 
is opened.

Successful exploitation allows arbitrary code execution.

====================================================================== 
4) Solution 

The vulnerability has been fixed in version 4.27 BETA.

====================================================================== 
5) Time Table 

05/09/2005 - Initial vendor notification.
05/09/2005 - Initial vendor reply.
21/09/2005 - Vendor released fixed version.
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/2005-45/advisory/

Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/

======================================================================