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ZipGenius Multiple Archive Handling Buffer Overflow
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Secunia Advisory:
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SA17061
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Release Date:
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2005-10-21
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Last Update:
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2005-10-28
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Popularity:
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6,051 views
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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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Partial Fix
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| Software: | ZipGenius 5.x
ZipGenius 6.x
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Description:
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
The vulnerabilities have been confirmed in version 5.5.1.468 and 6.0.2.1041. Prior versions may also be affected.
Solution:
Update to version 6.0.2.1050.
http://downloads.zipgenius.it/
NOTE: Further testing has revealed that vulnerability #1 has not been completely fixed in version 6.0.2.1050. It is still possible to cause a buffer overflow via a specially crafted ZIP file.
Do not download ZIP files from untrusted sources.
Provided and/or discovered by:
Tan Chew Keong, Secunia Research.
Changelog:
2005-10-28: Updated "Solution Status" and "Solution" sections.
Original Advisory:
ZipGenius:
http://forum.zipgenius.it/index.php?showtopic=684
Secunia Research:
http://secunia.com/secunia_research/2005-54/advisory/
Other References:
SA14359:
http://secunia.com/advisories/14359/
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About this Secunia Advisory
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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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