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secunia-ultimatezip.txt

secunia-ultimatezip.txt
Posted May 21, 2006
Site secunia.com

Secunia Research has discovered a vulnerability in UltimateZip, 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.

tags | advisory, overflow
SHA-256 | 4094f1b3d23d12c9fd6164ced4bf912c2ee2ba1fb20f09b78f9a133cd2147e1b

secunia-ultimatezip.txt

Change Mirror Download
====================================================================== 

Secunia Research 11/05/2006

- UltimateZip 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

* UltimateZip version 2.7.1, 3.0.3, and 3.1b.

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 UltimateZip, 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 ACE archives from untrusted sources.

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

26/04/2006 - Initial vendor notification.
27/04/2006 - Second vendor notification.
04/05/2006 - Third vendor notification.
11/05/2006 - 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/2006-29/advisory/

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

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



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