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LessTif "DEBUG_FILE" Privilege Escalation Vulnerability
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Secunia Advisory:
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SA21428
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Release Date:
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2006-08-09
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Last Update:
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2006-08-18
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Popularity:
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5,594 views
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Critical:
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Less critical
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Impact:
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Privilege escalation
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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: | LessTif 0.x
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Subscribe:
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Instant alerts on relevant vulnerabilities 
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| | CVE reference: | CVE-2006-4124
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Description:
Karol Wiesek has reported a vulnerability in LessTif, which can be exploited by malicious, local users to gain escalated privileges.
The vulnerability is caused due to the libXm library allowing users to specify a file for writing debug output to via the "DEBUG_FILE" environment variable. By running a setuid binary linked against a vulnerable libXm library, this can be exploited to create world-writable files with the effective user id of the binary.
Solution:
Restrict permission to execute setuid binaries linked against libXm to trusted users only.
Provided and/or discovered by:
Karol Wiesek
Changelog:
2006-08-18: Added CVE reference.
Original Advisory:
http://karol.wiesek.pl/files/lesstif-advisory.pdf
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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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10th Oct, 2008
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