OSEC

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Subject: [RHSA-2000:117-01] Updated bash (1.x) packages for Red Hat Linux 5.x, 6.x available
From: bugzillaREDHAT.COM
Date: Mon Nov 27 2000 - 13:11:00 CST

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                   Red Hat, Inc. Security Advisory

Synopsis: Updated bash (1.x) packages for Red Hat Linux 5.x, 6.x available
Advisory ID: RHSA-2000:117-01
Issue date: 2000-11-27
Updated on: 2000-11-27
Product: Red Hat Linux
Keywords: bash bash1 security exploit << denial of service
Cross references: N/A
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1. Topic:

Updated bash (1.x) packages for Red Hat Linux 5.x and 6.x, fixing a security problem, are available.

2. Relevant releases/architectures:

Red Hat Linux 5.0 - i386, alpha, sparc
Red Hat Linux 5.1 - i386, alpha, sparc
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

3. Problem description:

The << operator in bash 1.x used predictable filenames, leading to a potential denial of service attack.

A local user account is required to exploit the security leak.

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):

21292 - bash creates insecure tmp files

6. RPMs required:

Red Hat Linux 5.2:

alpha:
ftp://updates.redhat.com/5.2/alpha/bash-1.14.7-23.5x.alpha.rpm

sparc:
ftp://updates.redhat.com/5.2/sparc/bash-1.14.7-23.5x.sparc.rpm

i386:
ftp://updates.redhat.com/5.2/i386/bash-1.14.7-23.5x.i386.rpm

sources:
ftp://updates.redhat.com/5.2/SRPMS/bash-1.14.7-23.5x.src.rpm

Red Hat Linux 6.2:

alpha:
ftp://updates.redhat.com/6.2/alpha/bash-1.14.7-23.6x.alpha.rpm

sparc:
ftp://updates.redhat.com/6.2/sparc/bash-1.14.7-23.6x.sparc.rpm

i386:
ftp://updates.redhat.com/6.2/i386/bash-1.14.7-23.6x.i386.rpm

sources:
ftp://updates.redhat.com/6.2/SRPMS/bash-1.14.7-23.6x.src.rpm

7. Verification:

MD5 sum Package Name
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e2eba8b1e7a15821046febdff1961508 5.2/SRPMS/bash-1.14.7-23.5x.src.rpm
002c01664380a1f084caf320dd058f3a 5.2/alpha/bash-1.14.7-23.5x.alpha.rpm
da6d41c36fcb4b28f9a4731c6785cb8d 5.2/i386/bash-1.14.7-23.5x.i386.rpm
f28847e9beae06113e58455a5133a1ca 5.2/sparc/bash-1.14.7-23.5x.sparc.rpm
23b421bbc697b9c57a7d413ece9e4df2 6.2/SRPMS/bash-1.14.7-23.6x.src.rpm
19ed96c0935ef630215736d242911c98 6.2/alpha/bash-1.14.7-23.6x.alpha.rpm
9fe492b13c08e7993a918d0395fda486 6.2/i386/bash-1.14.7-23.6x.i386.rpm
1a92e61a4d5c7989b26d687dfe881a5c 6.2/sparc/bash-1.14.7-23.6x.sparc.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:

N/A

Copyright(c) 2000 Red Hat, Inc.