Title: GNU AN Local Command Line Option Buffer Overflow Vulnerability
Severity: MODERATE
Description:
GNU an is a utility to analyze chess moves.
A local buffer overflow has been reported for GNU an that may result in an attacker potentially obtaining elevated privileges.
The vulnerability exists due to insufficient boundary checks performed on some commandline options. Specifically, the length of the '-s' commandline option is not properly verified.
An attacker can exploit this vulnerability by invoking /usr/bin/gnuan with an overly long '-s' commandline option, consisting of at least 580 bytes. This will result in the overflow condition and the corruption of sensitive memory with attacker-supplied values.
Successful exploitation may result in the execution of attacker-supplied code. Privilege escalation may be possible on systems where the utility is installed setuid/setgid.
Affected Products:
- GNU an 0.0.0
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