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GNATS Arbitrary File Overwrite Security Issue
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Secunia Advisory:
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SA15963
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Release Date:
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2005-07-07
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Last Update:
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2006-01-31
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Popularity:
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4,913 views
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Critical:
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Less critical
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Impact:
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Security Bypass
Manipulation of data
System access
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Where:
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Local system
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Solution Status:
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Unpatched
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| Software: | GNATS 3.x
GNATS 4.x
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| CVE reference: | CVE-2005-2180
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Description:
A security issue has been reported in GNATS, which can be exploited by malicious, local users to overwrite arbitrary files on a vulnerable system.
The security issue is caused due to "gen-index" being installed with suid root when compiled from sources and when the "gnat" user and group do not exist. This can be exploited by malicious users to overwrite arbitrary files by running "gen-index" with the filename to overwrite as the parameter to the "-o" argument.
The security issue has been reported in version 4.0 and 4.1.0. Prior versions might also be affected.
Solution:
Remove the suid bits from "gen-index".
Provided and/or discovered by:
pi3ki31ny
Changelog:
2006-01-31: Added CVE reference.
Original Advisory:
http://www.pi3.int.pl/adv/gnats.txt
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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