Date: Fri, 30 Sep 2005 20:16:57 +0200
From: Trustix Security Advisor <tsl@trustix.org.>
To: bugtraq@securityfocus.com
Subject: TSLSA-2005-0053 - unzip
Message-ID: <20050930181657.GA19538@tsunami.trustix.net.>
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Trustix Secure Linux Security Advisory #2005-0053
Package names: unzip
Summary: Multiple vulnerabilities
Date: 2005-09-30
Affected versions: Trustix Secure Linux 2.2
Trustix Secure Linux 3.0
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Package description:
unzip
The unzip utility is used to list, test, or extract files from a zip
archive. Zip archives are commonly found on MS-DOS systems. The zip
utility, included in the zip package, creates zip archives. Zip and
unzip are both compatible with archives created by PKWARE(R)'s PKZIP
for MS-DOS, but the programs' options and default behaviors do differ
in some respects.
Problem description:
unzip < TSL 3.0 > < TSL 2.2 >
- SECURITY Fix: Fix Race condition that allows local users to modify
permissions of arbitrary files via a hard link attack on a file while
it is being decompressed, whose permissions are changed by Unzip after
the decompression is complete.
The Common Vulnerabilities and Exposures project has assigned the
name CAN-2005-2475 to this issue.
Action:
We recommend that all systems with this package installed be upgraded.
Please note that if you do not need the functionality provided by this
package, you may want to remove it from your system.
Location:
All Trustix Secure Linux updates are available from
<URI:http://http.trustix.org/pub/trustix/updates/>;
<URI:ftp://ftp.trustix.org/pub/trustix/updates/>;
About Trustix Secure Linux:
Trustix Secure Linux is a small Linux distribution for servers. With focus
on security and stability, the system is painlessly kept safe and up to
date from day one using swup, the automated software updater.
Automatic updates:
Users of the SWUP tool can enjoy having updates automatically
installed using 'swup --upgrade'.
Questions?
Check out our mailing lists:
<URI:http://www.trustix.org/support/>;
Verification:
This advisory along with all Trustix packages are signed with the
TSL sign key.
This key is available from:
<URI:http://www.trustix.org/TSL-SIGN-KEY>;
The advisory itself is available from the errata pages at
<URI:http://www.trustix.org/errata/trustix-2.2/>; and
<URI:http://www.trustix.org/errata/trustix-3.0/>;
or directly at
<URI:http://www.trustix.org/errata/2005/0053/>;
MD5sums of the packages:
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8bc920f5571c1244b7f39447d14f1fc1 3.0/rpms/unzip-5.52-4tr.i586.rpm
4ebdb8a6b3c20d7cd6c1ea8e4d76028c 2.2/rpms/unzip-5.51-2tr.i586.rpm
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Trustix Security Team
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