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Insecure Library Loading
Moderately critical

WinRAR Format String and Buffer Overflow Vulnerabilities

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Release Date:  2005-10-11    Last Update:  2006-01-19    Views:  14,993

Secunia Advisory SA16973

Where:

From remote

Impact:

System access

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

Description


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

1) A format string error exists when displaying a diagnostic error message that informs the user of an invalid filename in an UUE/XXE encoded file. This can be exploited to execute arbitrary code when a malicious UUE/XXE file is decoded.

2) A boundary error in UNACEV2.DLL can be exploited to cause a stack-based buffer overflow. This allows arbitrary code execution when a malicious ACE archive containing a file with an overly long file name is extracted.

Vulnerability #2 is related to:
SA14359

The vulnerabilities have been confirmed in version 3.50. Prior versions may also be affected.


Solution:
Update to version 3.51.

Further details available to Secunia VIM customers

Provided and/or discovered by:
Tan Chew Keong, Secunia Research.

Original Advisory:
RARLAB:
http://www.rarlabs.com/rarnew.htm

Secunia Research:
http://secunia.com/secunia_research/2005-53/advisory/

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: WinRAR Format String and Buffer Overflow Vulnerabilities

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