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WinRAR Format String and Buffer Overflow Vulnerabilities
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Secunia Advisory:
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SA16973
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Release Date:
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2005-10-11
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Last Update:
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2006-01-19
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Critical:
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Moderately critical
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Impact:
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System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | WinRAR 3.x
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| | CVE reference: | CVE-2005-3262 (Secunia mirror)
CVE-2005-3263 (Secunia mirror)
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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.
Do you have this product installed on your home computer? Scan using the free Personal Software Inspector. Check if a vulnerable version is installed on computers in your corporate network, scan using the Network Software Inspector.
Solution:
Update to version 3.51.
http://www.rarlabs.com/download.htm
Provided and/or discovered by:
Tan Chew Keong, Secunia Research.
Changelog:
2006-01-19: Added CVE references.
Original Advisory:
RARLAB:
http://www.rarlabs.com/rarnew.htm
Secunia Research:
http://secunia.com/secunia_research/2005-53/advisory/
Other References:
SA14359:
http://secunia.com/advisories/14359/
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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8 Related Secunia Security Advisories
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1. WinRAR Multiple Unspecified Vulnerabilities
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2. RARLabs UnRAR Password Prompt Buffer Overflow Vulnerability
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3. WinRAR LHA Archive Processing Buffer Overflow
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4. WinRAR Delete File Buffer Overflow Vulnerability
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5. WinRAR "Repair Archive" Feature Vulnerability
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6. WinRAR Directory Traversal Vulnerability
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7. WinRAR buffer overflow
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8. Various Archivers Directory Traversal Vulnerability
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If you have new information regarding this Secunia advisory or a product in our database, please send it to us using either our web form or email us at vuln@secunia.com.
Ideas, suggestions, and other feedback are most welcome.
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