The crypto provider in Solaris 10 3/05 HW2 when running on Sun Fire T2000 platforms might incorrectly verify a DSA signature. Applications which depend on the results of this DSA signature verification might be vulnerable to trusting data which could have been tampered with.

This issue can occur on the following platform:

• Sun Fire T2000 with Solaris 10 (3/05 HW2) without patch 121236-01

Note: This issue only affects T2000 systems with Solaris 10 3/05 HW2 installed.

To determine if a system has this version of Solaris 10 installed (3/05 HW2), the following command can be run:

    % cat /etc/release
               Solaris 10 3/05 HW2 s10s_hw2wos_05 SPARC
        Copyright 2005 Sun Microsystems, Inc.  All Rights Reserved.
               Use is subject to license terms.
                 Assembled 26 September 2005

There are no symptoms that would indicate this vulnerability has been exploited.

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

This issue is addressed in the following releases:

• Sun Fire T2000 (with Solaris 10) with patch 121236-01 or later
• Sun Fire T2000 with Solaris 10 Update 1 or later

Note: The T2000 platform is now shipping with Solaris 10 Update 1 installed.

This solution has no attachment