A Security Vulnerability in Solaris Sockets Direct Protocol (SDP) Driver (sdp(7D)) may Allow Users to Exhaust Kernel Memory

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A security vulnerability in Solaris Sockets Direct Protocol (SDP) driver (sdp(7D)):

1. Impact

A security vulnerability in Solaris Sockets Direct Protocol (SDP) driver (sdp(7D)) may allow a local or remote unprivileged user to exhaust all kernel memory.  This is a type of Denial of Service (DoS).

Note: No applications bundled with Solaris are affected by this issue however third-party applications which make use of SDP may be affected.

2. Contributing Factors

This issue can occur in the following releases:

SPARC Platform

• Solaris 10 with patch 127127-11 and without patch 141444-09
  
• OpenSolaris based upon builds snv_57 through snv_94
  

x86 Platform

• Solaris 10 with patch 127128-11 and without patch 141445-09
  
• OpenSolaris based upon builds snv_57 through snv_94

Note 1: Solaris 8 and Solaris 9 are not impacted by this issue.

Note 2: OpenSolaris distributions may include additional bug fixes above and beyond the build from which it was derived.  To determine the base build of OpenSolaris, the following command can be used:

    $ uname -v
    snv_111

Note 3: This issue only affects applications written to use the Sockets Direct Protocol (SDP) driver. No applications shipped with Solaris are affected by this issue. To determine if Solaris Sockets Direct Protocol (SDP) is enabled, execute the following command:

    $ sdpadm status
    SDP is Enabled

3. Symptoms

There are no predictable symptoms that would indicate the described vulnerability has been exploited.

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 141444-09 or later
  
• OpenSolaris based upon builds snv_95 or later
  

x86 Platform

• Solaris 10 with patch 141445-09 or later
  
• OpenSolaris based upon builds snv_95 or later

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

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Modification History

02-Dec-2009: Updated Contributing Factors section.

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