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Secunia Research 30/12/2005

- TUGZip ARJ Archive Handling Buffer Overflow Vulnerability -

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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

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1) Affected Software

* TUGZip 3.4.0.0

Other versions may also be affected.

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2) Severity

Rating: Moderately Critical
Impact: System access
Where: Remote

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3) Description of Vulnerability

Secunia Research has discovered a vulnerability in TUGZip, 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 archive containing a file with an overly long filename. This can
be exploited to cause a stack-based buffer overflow.

Successful exploitation allows arbitrary code execution when a
malicious ARJ file is opened.

The vulnerability has been confirmed in version 3.4.0.0. Other
versions may also be affected.

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4) Solution

Do not open untrusted ARJ archives.

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5) Time Table

07/10/2005 - Initial vendor notification.
13/10/2005 - Initial vendor reply.
15/11/2005 - Reminder sent.
30/12/2005 - Public disclosure.

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6) Credits

Discovered by Tan Chew Keong, Secunia Research.

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7) References

No other references.

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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/

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9) Verification

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2005-63/advisory/

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

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