[SNS Advisory No.50] Compaq Tru64 UNIX dtprintinfo "-session" Buffer Overflow Vulnerability

["snsadv () lac co jp" <snsadv () lac co jp>]

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SNS Advisory No.50
Compaq Tru64 UNIX dtprintinfo "-session" Buffer Overflow Vulnerability

Problem first discovered: Wed, 10 Oct 2001
Published: Thu, 17 Apr 2002
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Overview:
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  dtprintinfo included with Compaq Tru64 UNIX contains a buffer overflow 
  vulnerability, which could potentially allow local attackers to elevate 
  privileges.

Problem Description:
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  The /usr/dt/bin/dtprintinfo included with Compaq Tru64 UNIX is a program 
  for opening the CDE Print Manager window. This program is installed as 
  SUID root. In dtprintinfo it is possible to restore a client to the 
  original desktop state by loading the session file using the "-session" 
  option. A buffer overflow will occur in dtprintinfo when an unusually long 
  string of characters is used in session filenames. This will result in the 
  possibility for the local attacker to execute arbitrary code as root. 
  
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  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.