The Directory Server process "ns-slapd" may be terminated by a local or remote unprivileged user. This would cause a Denial of Service (DoS) to directory server services hosted on the affected system.

Sun acknowledges with thanks, iDefense (http://www.idefense.com), for bringing this issue to our attention.

This issue is also described in the following document:

• http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=491

This issue can occur in the following releases for all platforms (Solaris 8, 9, and 10 on Solaris SPARC and Solaris x86 Platforms, Linux, Windows, HP-UX, and AIX):

Native Package Versions:

• Sun ONE Directory Server 5.2
• Sun Java System Directory Server 5 2003Q4 (5.2patch1)
• Sun Java System Directory Server 5 2004Q2 (5.2patch2)
• Sun Java System Directory Server 5 2005Q1 (5.2patch3)
• Sun Java System Directory Server 5 2005Q4 (5.2patch4)

PatchZIP (Compressed Archive) versions:

• Sun ONE Directory Server 5.1
• Sun One Directory Server 5.2
• Sun Java System Directory Server 5.2 Patch2
• Sun Java System Directory Server 5.2 Patch3
• Sun Java System Directory Server 5.2 Patch4

If the described issue occurs, the Directory Server exits unexpectedly at the second request and a message similar to the following is logged for the first request:

    [10/Oct/2006:10:32:10 +0200] conn=0 op=0 msgId=1 - ber decoding error (op=Compare; params=DN,Type,Value)
    [10/Oct/2006:10:32:10 +0200] conn=0 op=0 msgId=1 - RESULT err=2 tag=111 nentries=0 etime=0

There is no workaround for this issue.

To recover from an unresponsive LDAP server instance, the following command can be used to restart the LDAP server process:

On UNIX systems (usually as root user):

    # <server instance path>/start-slapd

On Windows systems, open the "Services" panel and start the service manually.

This issue is addressed in Sun Java System Directory Server 5.2 Patch5. To upgrade to Directory Server 5.2patch5, apply the following patches:

For the Native Package Versions:

• Solaris Sparc: 115614-27
• Solaris x86: 115615-27
• Linux: 118080-12
• HP-UX : 121393-02
• Windows: 121392-03

For the PatchZIP (Compressed Archive) versions:

• Solaris Sparc: 117665-04
• Solaris x86: 117666-04
• Linux: 117668-04
• Windows: 117667-04
• HP-UX: 117669-04
• AIX: 117670-04

• Updated Resolution section

• State: Resolved
• Updated Resolution section

This solution has no attachment