Bug 121332 - CAN-2004-0233 utempter directory traversal symlink attack
CAN-2004-0233 utempter directory traversal symlink attack
Product: Red Hat Enterprise Linux 3
Classification: Red Hat
Component: utempter (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Mike A. Harris
David Lawrence
: Security
Depends On:
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Reported: 2004-04-20 11:47 EDT by Mark J. Cox
Modified: 2007-11-30 17:07 EST (History)
1 user (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2004-05-26 03:45:00 EDT
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Description Mark J. Cox 2004-04-20 11:47:49 EDT
Steve Grubb discovered a flaw in Utempter which allowed device names
containing directory traversal sequences such as '/../'.  In
combination with an application that trusts the utmp or wtmp files,
this could allow a local attacker the ability to overwrite privileged
files using a symlink.

         CAN-2004-0233 Affects: 3AS 3ES 3WS
         CAN-2004-0233 Affects: 2.1AS 2.1AW 2.1ES 2.1WS

Was made public on April 19th 2004
Comment 2 Mark J. Cox 2004-05-26 03:45:00 EDT
An errata has been issued which should help the problem 
described in this bug report. This report is therefore being 
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files, 
please follow the link below. You may reopen this bug report 
if the solution does not work for you.


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