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AUSCERT External Security Bulletin Redistribution
ESB-2007.0366 -- [Solaris]
A Security Vulnerability in the Solaris 10 inetd(1M) Service
May Lead to a Denial of Service (DoS) Condition
7 June 2007
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AusCERT Security Bulletin Summary
---------------------------------
Product: inetd
Publisher: Sun Microsystems
Operating System: Solaris 10
Impact: Denial of Service
Access: Remote/Unauthenticated
CVE Names: CVE-2007-2990
Original Bulletin:
http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-102921-1
Revision History: June 7 2007: Added CVE reference
May 31 2007: Initial Release
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Sun(sm) Alert Notification
* Sun Alert ID: 102921
* Synopsis: A Security Vulnerability in the Solaris 10 inetd(1M)
Service May Lead to a Denial of Service (DoS) Condition
* Category: Security
* Product: Solaris 10 Operating System
* BugIDs: 6553649
* Avoidance: Patch
* State: Resolved
* Date Released: 29-May-2007
* Date Closed: 29-May-2007
* Date Modified:
1. Impact
A security vulnerability in the inetd(1M) service may allow a local
unprivileged user the ability to shut down the inetd daemon process,
causing a Denial of Service (DoS) to all internet services managed by
the inetd(1M) process on the system.
2. Contributing Factors
This issue can occur in the following releases:
SPARC Platform:
* Solaris 10 without patch 121288-03
x86 Platform:
* Solaris 10 without patch 121289-04
NOTE: Solaris 8 and 9 are not affected by this issue.
This issue affects all Solaris 10 systems with the inetd service
enabled (svc:/network/inetd:default). To determine if the inetd
service is enabled on a system, the following command can be run:
$ svcs inetd
STATE STIME FMRI
online 11:23:16 svc:/network/inetd:default
If the command returns the state of the inetd service as 'online' (as
in the above example) then the inetd service is enabled on the system.
3. Symptoms
Repeated attempts by unprivileged users to stop the inetd server may
transition the inetd service to the "maintenance" state, thereby
moving all internet services managed by inetd(1M) to the "offline"
state.
To determine the state of the inetd service, the following command can
be run:
$ svcs inetd
STATE STIME FMRI
maintenance 12:00:23 svc:/network/inetd:default
4. Relief/Workaround
To prevent this issue from occurring until the patches listed in
section 5 can be applied, the Unix domain socket file
"/var/run/.inetd.uds" may be deleted after the inetd server starts. If
this file has been deleted, the following commands must be run (as
'root' user) to restart or disable the inetd service:
To restart the inetd service:
# pkill inetd
To disable the inetd service:
# svcadm disable inetd
# pkill inetd
5. Resolution
This issue is addressed in the following releases:
SPARC Platform
* Solaris 10 with patch 121288-03 or later
x86 Platform
* Solaris 10 with patch 121289-04 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 2000-2006 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved
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