Security Vulnerability in Solaris snoop(1M) when Displaying SMB Traffic

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Security Vulnerability in Solaris snoop(1M) when Displaying SMB Traffic

1. Impact

A security vulnerability in the snoop(1M) network utility relating to the display of SMB traffic may allow a remote user the ability to execute arbitrary commands as the user "nobody" or possibly another local user.

Sun acknowledges with thanks, Gael Delalleau working with the iDefense VCP, for bringing these issues to our attention.

These issues are also described in the following documents:


2. Contributing Factors

This issue can occur in the following releases:

SPARC Platform

• Solaris 10 without patch 138083-01
• Solaris 9 without patch 112915-05
• Solaris 8 without patch 108964-11
• OpenSolaris based upon builds snv_01 through snv_95

x86 Platform

• Solaris 10 without patch 138084-01
• Solaris 9 without patch 114262-04
• Solaris 8 without patch 108965-11
• OpenSolaris based upon builds snv_01 through snv_95

Notes:

In order for a system to be affected by this issue, a user must run the snoop(1M) utility without using the "-o" option. The interpretation by snoop of a maliciously crafted packet can trigger the issue and allow arbitrary commands to be run as the user running snoop. This can happen whether or not the packet is captured "live" from an interface or is already in a snoop capture file and is being read via the "-i" flag.

When run as the user "root", the snoop utility changes the effective user to "nobody", so in this case the commands will run as the user "nobody" and not as the user "root". For all other users the commands will run as that user.

3. Symptoms

There are no predictable symptoms that would indicate this issue has been exploited to execute arbitrary code.

4. Workaround

There is no workaround that would allow the snoop(1M) command to be used without risking exposure to this issue. To defend completely against this issue, the snoop command should not be used until the patches listed in the Resolution section can be applied.

5. Resolution

This issue is addressed in the following releases:

SPARC Platform

• Solaris 10 with patch 138083-01
• Solaris 9 with patch 112915-05
• Solaris 8 with patch 108964-11
• OpenSolaris based upon builds snv_96 or later

x86 Platform

• Solaris 10 with patch 138084-01
• Solaris 9 with patch 114262-04
• Solaris 8 with patch 108965-11
• OpenSolaris based upon builds snv_96 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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