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AUSCERT External Security Bulletin Redistribution
ESB-2001.008 -- COMPAQ SSRT0689U Security Advisory
Potential Security setgid problem with locale message files
8 January 2000
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AusCERT Security Bulletin Summary
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Product: locale
Vendor: Compaq
Operating System: Tru64 UNIX V4.0D, V4.0F, V4.0G, V5.0, V5.0a
Access Required: Existing Account
Ref: ESB-2001.004
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SOURCE: Compaq Computer Corporation SSRT0689U
Software Security Response Team
TITLE: Potential Security setgid problem with locale message files
(Compaq Case ID: SSRT0689U)
x-ref: SGI CORE-090400, CVE# CAN2000-0844), potential locale
format vulnerability.
Date: 18-DEC-2000
"Compaq is broadly distributing this Security Advisory in order
to bring to the attention of users of Compaq products the
important security information contained in this Advisory.
Compaq recommends that all users determine the applicability of
this information to their individual situations and take
appropriate action.
Compaq does not warrant that this information is necessarily
accurate or complete for all user situations and, consequently,
Compaq will not be responsible for any damages resulting from
user's use or disregard of the information provided in this
Advisory."
IMPACT:
Versions Affected: Compaq's Tru64 UNIX V4.0D, V4.0F, V4.0G
Compaq's Tru64 UNIX V5.0, V5.0a,
Fix Shipped in the latest patch kit for V5.1 (BL1)
For all other versions Compaq strongly recommends you upgrade to a
minimum of V4.0D and obtain the necessary patch.
A potential security vulnerability has been discovered, where under
certain circumstances, system privilege may be compromised within a
group.
SEVERITY: Medium
PROBLEM SYMPTOM:
In many implementations of locale message support a problem has
been reported where checks are not made for setgid programs in the
message catalog code using NLSPATH environmental variable.
Note: Compaq's TRU64 UNIX does not use NLSPATH environmental
variable if the program file is setuid root, or the current working
directory if the user is the root user and/or the message catalog is
setuid root.
SOLUTION:
Compaq Tru64 UNIX engineering has provided a fix for this potential
problem for all supported versions of the software. We apologize
that this fix is not available from our patch site. If you determine
that you need this fix please contact your normal Compaq Services support
channel and request a patch using the reference SSRT0689U.
Compaq appreciates your cooperation and patience. We regret any
inconvenience applying this information may cause.
As always, Compaq urges you to periodically review your system
management and security procedures. Compaq will continue to
review and enhance the security features of its products and work
with customers to maintain and improve the security and integrity
of their systems.
(c) Copyright 2000 Compaq Computer Corporation. All rights reserved
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