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Secunia Research 07/09/2005
- ALZip ACE Archive Handling Buffer Overflow -
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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
ALZip v6.11 (Korean) (And all prior Korean versions)
ALZip v5.52 (All language versions)
ALZip v5.51 (All language versions)
ALZip v6.03 (English)
ALZip v6.1 beta
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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 ALZip, which can
be exploited by malicious people to compromise a vulnerable 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 and can cause a stack-based buffer overflow. This can be
exploited to execute arbitrary code when the user extracts a
specially crafted ACE archive.
The vulnerability is related to:
http://secunia.com/SA14359
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4) Solution
Update to the fixed versions.
International Versions:
Update to version 6.1
Korean Version:
Update to version 6.12
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5) Time Table
22/08/2005 - Initial vendor notification.
22/08/2005 - Initial vendor reply.
05/09/2005 - Notified by vendor that fixed versions have been
released.
07/09/2005 - Public disclosure.
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6) Credits
Discovered by Tan Chew Keong, Secunia Research.
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7) References
No references available.
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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/2005-41/advisory/
Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/
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