Sec. Vulnerability in CDE ttsession (rev. 01)

Sec. Vulnerability in CDE ttsession (rev. 01)

Post by Security Ale » Tue, 21 Sep 1999 04:00:00

Last Revised: 20 Sep. 99

The information in the following Security Bulletin should be acted upon
as soon as possible.  Hewlett-Packard Company will not be liable for any
consequences to any customer resulting from customer's failure to fully
implement instructions in this Security Bulletin as soon as possible.

PROBLEM:  ttsession uses weak RPC authentication mechanism

PLATFORM: HP-9000 Series 700/800 HP-UX releases 10.X & 11.00 running CDE.

DAMAGE:   Allows remote and local users to execute programs with the
          privileges of the running ttsession.

          Install the applicable patch.

AVAILABILITY: The patches for 10.2X and 11.00 are available now.
          NOTE: This bulletin will be revised when other patches
                are available.
CHANGE SUMMARY: This revision affects only HP-UX release 10.24.
   A. Background
      This problem has been reported in CERT Advisory CA-99-11.

      The advisory reports four vulnerabilities:

        #1: ToolTalk ttsession uses weak RPC authentication mechanism
        #2: CDE dtspcd relies on file-system based authentication
        #3: CDE dtaction buffer overflow
        #4: CDE ToolTalk shared library buffer overflow in TT_SESSION

      With the patches recommended in previous security bulletins
      HP-UX releases 10.X and 11.00 are not vulnerable to #2, #3, nor #4.

      To avoid vulnerability #1 install the applicable patch below.

   B. Fixing the problem - Install the applicable patch:
              HP-UX release 10.10      In progress;
              HP-UX release 10.20      PHSS_19747;
------->>>>   HP-UX release 10.24      PHSS_19819;
              HP-UX release 11.00      PHSS_19748.

      Note:  HP-UX release 10.30 was a development release prior to
             the availability of HP-UX release 11.00.  HP-UX release
             10.30 will not be patched.

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