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Date: Fri, 1 Dec 2000 16:53:00 -0500
From: bugzilla@REDHAT.COM
Subject: [RHSA-2000:121-04] Updated tcsh packages are now available for
To: BUGTRAQ@SECURITYFOCUS.COM
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Red Hat, Inc. Security Advisory
Synopsis: Updated tcsh packages are now available for Red Hat Linux.
Advisory ID: RHSA-2000:121-04
Issue date: 2000-11-30
Updated on: 2000-12-01
Product: Red Hat Linux
Keywords: tcsh symlink vulnerability
Cross references: N/A
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1. Topic:
Updated tcsh packages are now available for Red Hat Linux 5.2, 6.x, and 7.
2. Relevant releases/architectures:
Red Hat Linux 5.2 - i386, alpha, sparc
Red Hat Linux 6.0 - i386, alpha, sparc
Red Hat Linux 6.1 - i386, alpha, sparc
Red Hat Linux 6.2 - i386, alpha, sparc
Red Hat Linux 6.2EE - i386, alpha, sparc
Red Hat Linux 7.0 - i386, alpha
Red Hat Linux 7.0J - i386, alpha
3. Problem description:
Versions 6.09 and below of tcsh are vulnerable to a symbolic link attack.
This attack can be used to cause users to destroy the contents of any file
to which they have write access.
4. Solution:
For each RPM for your particular architecture, run:
rpm -Fvh [filename]
where filename is the name of the RPM.
5. Bug IDs fixed (http://bugzilla.redhat.com/bugzilla for more info):
20679 - tcsh '<<' security issue
6. RPMs required:
Red Hat Linux 5.2:
alpha:
ftp://updates.redhat.com/5.2/alpha/tcsh-6.10-0.5.x.alpha.rpm
sparc:
ftp://updates.redhat.com/5.2/sparc/tcsh-6.10-0.5.x.sparc.rpm
i386:
ftp://updates.redhat.com/5.2/i386/tcsh-6.10-0.5.x.i386.rpm
sources:
ftp://updates.redhat.com/5.2/SRPMS/tcsh-6.10-0.5.x.src.rpm
Red Hat Linux 6.0:
sparc:
ftp://updates.redhat.com/6.0/sparc/tcsh-6.10-0.6.x.sparc.rpm
i386:
ftp://updates.redhat.com/6.0/i386/tcsh-6.10-0.6.x.i386.rpm
alpha:
ftp://updates.redhat.com/6.0/alpha/tcsh-6.10-0.6.x.alpha.rpm
sources:
ftp://updates.redhat.com/6.0/SRPMS/tcsh-6.10-0.6.x.src.rpm
Red Hat Linux 6.1:
alpha:
ftp://updates.redhat.com/6.1/alpha/tcsh-6.10-0.6.x.alpha.rpm
sparc:
ftp://updates.redhat.com/6.1/sparc/tcsh-6.10-0.6.x.sparc.rpm
i386:
ftp://updates.redhat.com/6.1/i386/tcsh-6.10-0.6.x.i386.rpm
sources:
ftp://updates.redhat.com/6.1/SRPMS/tcsh-6.10-0.6.x.src.rpm
Red Hat Linux 6.2:
alpha:
ftp://updates.redhat.com/6.2/alpha/tcsh-6.10-0.6.x.alpha.rpm
sparc:
ftp://updates.redhat.com/6.2/sparc/tcsh-6.10-0.6.x.sparc.rpm
i386:
ftp://updates.redhat.com/6.2/i386/tcsh-6.10-0.6.x.i386.rpm
sources:
ftp://updates.redhat.com/6.2/SRPMS/tcsh-6.10-0.6.x.src.rpm
Red Hat Linux 7.0:
alpha:
ftp://updates.redhat.com/7.0/alpha/tcsh-6.10-1.alpha.rpm
i386:
ftp://updates.redhat.com/7.0/i386/tcsh-6.10-1.i386.rpm
sources:
ftp://updates.redhat.com/7.0/SRPMS/tcsh-6.10-1.src.rpm
7. Verification:
MD5 sum Package Name
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ef09e7d86a3ea3805fed90b4e409ce78 5.2/SRPMS/tcsh-6.10-0.5.x.src.rpm
871a2d33370517380173c327d91deb83 5.2/alpha/tcsh-6.10-0.5.x.alpha.rpm
e228b2179d2917067a2267d08eb4f9f1 5.2/i386/tcsh-6.10-0.5.x.i386.rpm
8c839a90f05ab9acb4b83dc620aee644 5.2/sparc/tcsh-6.10-0.5.x.sparc.rpm
4eb03f6ac99e3e6f15fa8e0a7f680530 6.0/SRPMS/tcsh-6.10-0.6.x.src.rpm
1a05f99e1fe6d5ec091160ee8012cd07 6.0/alpha/tcsh-6.10-0.6.x.alpha.rpm
6c66a718122e2a0f79bb0f6218082ebc 6.0/i386/tcsh-6.10-0.6.x.i386.rpm
eda7e5af943795c2c85050724d8f5deb 6.0/sparc/tcsh-6.10-0.6.x.sparc.rpm
4eb03f6ac99e3e6f15fa8e0a7f680530 6.1/SRPMS/tcsh-6.10-0.6.x.src.rpm
1a05f99e1fe6d5ec091160ee8012cd07 6.1/alpha/tcsh-6.10-0.6.x.alpha.rpm
6c66a718122e2a0f79bb0f6218082ebc 6.1/i386/tcsh-6.10-0.6.x.i386.rpm
eda7e5af943795c2c85050724d8f5deb 6.1/sparc/tcsh-6.10-0.6.x.sparc.rpm
4eb03f6ac99e3e6f15fa8e0a7f680530 6.2/SRPMS/tcsh-6.10-0.6.x.src.rpm
1a05f99e1fe6d5ec091160ee8012cd07 6.2/alpha/tcsh-6.10-0.6.x.alpha.rpm
6c66a718122e2a0f79bb0f6218082ebc 6.2/i386/tcsh-6.10-0.6.x.i386.rpm
eda7e5af943795c2c85050724d8f5deb 6.2/sparc/tcsh-6.10-0.6.x.sparc.rpm
8237e14a4430f4ca48dd4421a049bf3d 7.0/SRPMS/tcsh-6.10-1.src.rpm
c4ce83f418496f40e3e802da03db3e6f 7.0/alpha/tcsh-6.10-1.alpha.rpm
1fee54c9b1fc394c03a8d960937a9747 7.0/i386/tcsh-6.10-1.i386.rpm
These packages are GPG signed by Red Hat, Inc. for security. Our key
is available at:
http://www.redhat.com/corp/contact.html
You can verify each package with the following command:
rpm --checksig <filename>
If you only wish to verify that each package has not been corrupted or
tampered with, examine only the md5sum with the following command:
rpm --checksig --nogpg <filename>
8. References:
http://www.securityfocus.com/vdb/bottom.html?vid=1926
Copyright(c) 2000 Red Hat, Inc.