[UNIX] Compaq Tru64 UNIX libc Buffer Overflow Vulnerability

From: support@securiteam.com
Date: 04/17/02 

From: support@securiteam.com
To: list@securiteam.com
Date: Wed, 17 Apr 2002 20:18:05 +0200 (CEST)

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  Compaq Tru64 UNIX libc Buffer Overflow Vulnerability
------------------------------------------------------------------------

SUMMARY

Libc included with Compaq Tru64 UNIX contains a buffer overflow
vulnerability, which could allow local attackers to elevate privileges.

DETAILS

Vulnerable systems:
 * Compaq Tru64 UNIX version 4.0F
 * Compaq Tru64 UNIX version 5.0
 * Compaq Tru64 UNIX version 5.1
 * Compaq Tru64 UNIX version 5.1A

Libc included with Compaq Tru64 UNIX is vulnerable to a buffer overflow
due to a flaw in the handling of the environment variables LANG and
LOCPATH. Local attackers could elevate privileges by using a SUID/SGID
executable file that links to the vulnerable libc.

Solution:
This problem can be eliminated by applying an appropriate patch to your
Tru64 UNIX version based on the information in the following URL:
Compaq SECURITY BULLETIN (SSRT-541) Potential Security Vulnerabilities in
Tru64, UNIX, CDE, NFS, and NIS:
<http://ftp.support.compaq.com/patches/.new/html/SSRT-541.shtml>
http://ftp.support.compaq.com/patches/.new/html/SSRT-541.shtml

ADDITIONAL INFORMATION

The information has been provided by <mailto:yosinaga@lac.co.jp> Noboru
Yoshinaga (LAC).

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