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| From: | SNS | | Date: | 17.04.2002 | | Subject: | [SNS Advisory No.51] Compaq Tru64 UNIX libc Buffer Overflow Vulnerability |
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SNS Advisory No.51
Compaq Tru64 UNIX libc Buffer Overflow Vulnerability
Problem first discovered: Sun, 18 Nov 2001
Published: Thu, 17 Apr 2002
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Overview:
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Libc included with Compaq Tru64 UNIX contains a buffer overflow
vulnerability, which could allow local attackers to elevate privileges.
Problem Description:
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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.
Affected Versions:
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Compaq Tru64 UNIX V4.0F
Compaq Tru64 UNIX V5.0
Compaq Tru64 UNIX V5.1
Compaq Tru64 UNIX V5.1A
Solution:
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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
Discovered by:
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Noboru Yoshinaga (LAC) yosinaga@lac.co.jp
Disclaimer:
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All information in these advisories are subject to change without any
advanced notices neither mutual consensus, and each of them is released
as it is. LAC Co.,Ltd. is not responsible for any risks of occurrences
caused by applying those information.
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