X-RDate: Fri, 09 Jan 1998 09:04:14 +0500 (ESK)
Date: Thu, 8 Jan 1998 15:58:07 -0500
From: [email protected]
To: [email protected]Subject: IBM-ERS Security Vulnerability Alert: The AIX "routed" daemon allows remote users to modify system files.
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EMERGENCY RESPONSE SERVICE
SECURITY VULNERABILITY ALERT
08 January 1998 20:30 GMT Number: ERS-SVA-E01-1998:001.1
VULNERABILITY SUMMARY
VULNERABILITY: The "routed" daemon allows remote users to modify system
files.
PLATFORMS: IBM AIX(r) 3.2.x, 4.1.x, 4.2.x, 4.3.x
SOLUTION: Apply the fixes listed below.
THREAT: Remote users can gain system access.
DETAILED INFORMATION
I. Description
The "routed" daemon accepts packets that cause arbitrary system files to be
created and/or modified. Only machines running the routed daemon are
vulnerable.
An exploit script has been made publicly available.
II. Impact
Remote users can modify system files which can allow remote access to the
system.
III. Solutions
A. How to alleviate the problem
A temporary fix is available via anonymous ftp from:
ftp://testcase.software.ibm.com/aix/fromibm/security.routed.tar.Z
Filename sum md5
routed 59682 40 1aae6cf116ae84f8bee91b96736b7d23
Use the following steps (as root) to install the temporary fix:
1. Uncompress and extract the fix:
# uncompress < security.routed.tar.Z | tar xf -
2. Execute the following commands to replace the vulnerable routed
binary:
# cp /usr/sbin/routed /usr/sbin/routed.orig
# chmod -x /usr/sbin/routed.orig
# cp routed/routed /usr/sbin/routed
# chmod 554 /usr/sbin/routed
NOTE: This temporary fix has not been fully regression tested.
B. Official fix
IBM is currently working on the following APARs but they are not yet
available.
AIX 4.3.x: IX73951
AIX 4.2.x: IX73949
AIX 4.1.x: IX73948
AIX 3.2.x: upgrade to version 4
IV. Obtaining Fixes
IBM AIX APARs may be ordered using Electronic Fix Distribution (via the FixDist
program), or from the IBM Support Center. For more information on FixDist, and
to obtain fixes via the Internet, please reference
http://service.software.ibm.com/aixsupport/
or send electronic mail to "[email protected]" with the word "FixDist" in
the "Subject:" line.
V. Acknowledgements
Thanks to www.rootshell.com for bringing this problem to our attention.
VI. Contact Information
Comments regarding the content of this announcement can be directed to the IBM
Support Center or to:
[email protected]
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vulnerabilities, send email to [email protected] with a subject
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IBM's Internet Emergency Response Service (IBM-ERS) is a subscription-based
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Visit the site for information about the service, copies of security alerts,
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Copyright 1998 International Business Machines Corporation.
The information in this document is provided as a service to customers of
the IBM Emergency Response Service. Neither International Business Machines
Corporation, Integrated Systems Solutions Corporation, nor any of their
employees, makes any warranty, express or implied, or assumes any legal
liability or responsibility for the accuracy, completeness, or usefulness of
any information, apparatus, product, or process contained herein, or
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The material in this security alert may be reproduced and distributed,
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