Title: Solaris cu Buffer Overflow Vulnerability
Severity: MODERATE
Description:
"cu" is a unix communications program. It is usually installed with enhanced privileges so that it may access hardware communications hardware.
The version of /usr/bin/cu that ships with Solaris contains a buffer overflow vulnerability.
The problem occurs when it copies argv[0] to an internal variable without bounds checking. As a result, if argv[0] exceeds the length of the destination buffer, it will be copied over neighbouring data on the stack.
It may be possible for a local attacker to exploit this vulnerability to gain effective group-id 'uucp'. This may lead to a root compromise.
Affected Products:
- Sun Solaris 2.4.0
- Sun Solaris 2.5.0
- Sun Solaris 2.5.1
- Sun Solaris 2.6
- Sun Solaris 7.0
- Sun Solaris 8
- Sun Solaris 8_x86
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