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AUSCERT External Security Bulletin Redistribution
ESB-2003.0611 -- Sun(sm) Alert Notification
SunAlert: 52111 Security Issue with the newtask(1)
04 September 2003
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AusCERT Security Bulletin Summary
---------------------------------
Product: newtask(1)
Publisher: Sun Microsystems
Operating System: Solaris 9
Platform: SPARC
x86
Impact: Root Compromise
Access Required: Existing Account
Original Bulletin:
http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert%2F52111
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DOCUMENT ID: 52111
SYNOPSIS: On Solaris 9, a Security Issue with the newtask(1) Command
May Lead to Unathorized Root Access
DETAIL DESCRIPTION:
Sun(sm) Alert Notification
* Sun Alert ID: 52111
* Synopsis: On Solaris 9 a Security Issue with the newtask(1)
Command May Lead to Unauthorized Root Access
* Category: Security
* Product: Solaris
* BugIDs: 4798119
* Avoidance: Patch
* State: Resolved
* Date Released: 28-Mar-2003
* Date Closed: 28-Mar-2003
* Date Modified:
1. Impact
A local unprivileged user may be able to gain unauthorized root access
due to a security issue with the newtask(1) command in Solaris 9.
2. Contributing Factors
This issue can occur in the following releases:
SPARC Platform
* Solaris 9 without patch 114713-01
x86 Platform
* Solaris 9 without patch 114714-01
Notes: Solaris 2.6 and 7 do not have the newtask(1) command and are
therefore not affected by this issue.
Solaris 8 is not affected by this issue.
3. Symptoms
There are no predictable symptoms that would show the described
problem has been exploited to gain root privileges.
SOLUTION SUMMARY:
4. Relief/Workaround
To work around the described issue, remove the setuid bit from
newtask(1):
# chmod u-s /usr/bin/sparcv7/newtask
# chmod u-s /usr/bin/sparcv9/newtask
# chmod u-s /usr/bin/i86/newtask
Note: removing the set-user-ID bit from the "newtask" binary will
prevent unprivileged users from using the "newtask" command.
5. Resolution
This issue is addressed in the following releases:
SPARC Platform
* Solaris 9 with patch 114713-01 or later
x86 Platform
* Solaris 9 with patch 114714-01 or later
This Sun Alert notification is being provided to you on an "AS IS"
basis. This Sun Alert notification may contain information provided by
third parties. The issues described in this Sun Alert notification may
or may not impact your system(s). Sun makes no representations,
warranties, or guarantees as to the information contained herein. ANY
AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
NON-INFRINGEMENT, ARE HEREBY DISCLAIMED. BY ACCESSING THIS DOCUMENT
YOU ACKNOWLEDGE THAT SUN SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE
OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN.
This Sun Alert notification contains Sun proprietary and confidential
information. It is being provided to you pursuant to the provisions of
your agreement to purchase services from Sun, or, if you do not have
such an agreement, the Sun.com Terms of Use. This Sun Alert
notification may only be used for the purposes contemplated by these
agreements.
Copyright 2000-2003 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved.
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