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Secunia-ZipGenius.txt

Secunia-ZipGenius.txt
Posted Oct 24, 2005
Authored by Secunia Research | Site secunia.com

Secunia Research has discovered some vulnerabilities in ZipGenius, which can be exploited by malicious people to compromise a user's system.

tags | advisory, vulnerability
SHA-256 | a06892cdcbe59aadbc48aa8c3d57e8c8c48c363ab4ec3944cd3e4f1b59bd74f9

Secunia-ZipGenius.txt

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

Secunia Research 21/10/2005

- ZipGenius 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

ZipGenius Version 5.5.1.468 and 6.0.2.1041.

Prior versions may also be affected.

======================================================================
2) Severity

Rating: Moderately Critical
Impact: System access
Where: Remote

======================================================================
3) Description of Vulnerability

Secunia Research has discovered some vulnerabilities in ZipGenius,
which can be exploited by malicious people to compromise a user's
system.

1) A boundary error exists in "zipgenius.exe", "zg.exe", "zgtips.dll",
and "contmenu.dll" when reading the filename of a compressed file
from a ZIP 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 read either in ZipGenius or from Windows
Explorer.

2) A boundary error exists in "zipgenius.exe" when handling the
original name of a UUE/XXE/MIM encoded file. This can be exploited
to cause a stack-based buffer overflow when a malicious UUE/XXE/MIM
archive containing an encoded file with an overly long filename is
opened.

3) A boundary error exists 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 malicious
ACE archive is extracted using "zipgenius.exe" or "zg.exe".

Vulnerability #3 is related to:
SA14359

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

Update to version 6.0.2.1050.

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

04/10/2005 - Initial vendor notification.
05/10/2005 - Initial vendor reply.
20/10/2005 - Vendor released fixed version.
21/10/2005 - Public disclosure.

======================================================================
6) Credits

Discovered by Tan Chew Keong, Secunia Research.

======================================================================
7) References

ZipGenius:
http://forum.zipgenius.it/index.php?showtopic=684

======================================================================
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/2005-54/advisory/

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

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

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