Security Vulnerability in the SNMP daemon (snmpd(1M)) May Lead to a Denial of Service (DoS) Condition

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Security Vulnerability in the SNMP daemon (snmpd(1M)) May Lead to a Denial of Service (DoS) Condition

1. Impact

A heap-based buffer overflow security vulnerability in the System Management Agent (SMA) SNMP daemon (snmpd(1M)) that ships with Solaris may allow a local or remote unprivileged user to crash the snmpd daemon via a specially crafted SNMP GETBULK request. This is a type of Denial of Service (DoS).

The issue is as described in the following documents:


2. Contributing Factors

This issue can occur in the following releases:

SPARC Platform

• Solaris 10 without patch 120272-25
  
• OpenSolaris based upon builds snv_01 through snv_119
  

x86 Platform

• Solaris 10 without patch 120273-27
  
• OpenSolaris based upon builds snv_01 through snv_119

Notes:

1. Solaris 8 and Solaris 9 do not ship with the Net-SNMP software and therefore are not impacted by this issue.

2. The Solaris 10 patches which address this vulnerability do not increment the version of Net-SNMP. The version of Net-SNMP supplied with the patches will still be reported as 5.0.9.

3. This issue only affects systems which have the SUNWsmagt package installed and sma service enabled.

To determine if the SUNWsmagt package is installed on the system, the following command can be run:

$ pkginfo -l SUNWsmagt
PKGINST: SUNWsmagt
NAME: System Management Agent files and libraries
CATEGORY: system
VERSION: 1.0,REV=2005.01.08.05.16

To determine if sma service is enabled on the machine, the following command can be run:

$ svcs svc:/application/management/sma:default
STATE          STIME    FMRI
online         16:43:30 svc:/application/management/sma:default

4. OpenSolaris distributions may include additional bug fixes above and beyond the build from which it was derived. The base build can be derived as follows:

$ uname -v
snv_111

3. Symptoms

There are no predictable symptoms that would indicate the described issue has occurred.

4. Workaround

There is no workaround for this issue. Please see the Resolution section below.

5. Resolution

This issue is addressed in the following releases:

SPARC Platform

• Solaris 10 with patch 120272-25 or later
  
• OpenSolaris based upon builds snv_120 or later
  

x86 Platform

• Solaris 10 with patch 120273-27 or later
  
• OpenSolaris based upon builds snv_120 or later
  

For more information on Security Sun Alerts, see Technical Instruction ID 213557.

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.

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Modification History

08-Jul-2009: Updated Workaround for IDRs
08-Sep-2009: Updated Contributing Factors and Resolution sections; now Resolved

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