M-006: HP-UX telnetd Security Vulnerability

[***** Start Hewlett-Packard Company Security Bulletin #0172 *****]

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    HEWLETT-PACKARD COMPANY SECURITY BULLETIN: #0172
    Originally issued: 16 October 2001
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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.

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PROBLEM: Systems running telnetd may permit unauthorized remote
         access.
         See: http://www.cert.org/advisories/CA-2001-21.html

          This vulnerability has been assigned the identifier
          CAN-2001-0554 by the Common Vulnerabilities and Exposures
          (CVE) group:
      http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2001-0554


PLATFORM: HP9000 Servers running HP-UX releases 10.X only.

DAMAGE:  An intruder can potentially execute arbitrary code
         with the privileges of the telnetd process.

SOLUTION: Apply the following patches to the release specified.

         10.01       PHNE_24820,
         10.10       PHNE_24820,
         10.20       PHNE_24821,
     SIS 10.20       PHNE_24822 (Telnet kerberos Patch),
         10.24       PHNE_25217.

MANUAL ACTIONS: The Secure Internet Services (SIS) product, if
                enabled, has to be disabled before the installation
                or removal of PHNE_24822 (Telnet kerberos Patch).

AVAILABILITY:   The patches are available now from http://itrc.hp.com.

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  A. Background
      A potential remotely exploitable buffer overflow in telnetd has
      been reported to Hewlett-Packard Company.  It is unique to HP-UX
      releases 10.X only.

  B. Fixing the problem
      Disable telnetd (by commenting out the /etc/inetd.conf entry for
      telnetd and running '/usr/sbin/inetd -c') if telentd is not needed
      on your system.

      Install the appropriate patch from the list below.

  C. Recommended solution

     Apply the following patches to the release specified.

         10.01       PHNE_24820,
         10.10       PHNE_24820,
         10.20       PHNE_24821,
     SIS 10.20       PHNE_24822,
         10.24       PHNE_25217.

     All patches are available now from http://itrc.hp.com.

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  ________________________________________________________________

-----End of Document ID:  HPSBUX0110-172--------------------------------------

[***** End Hewlett-Packard Company Security Bulletin #0172 *****]

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