Hewlett-Packard Company Information for VU#398025

Remote Buffer Overflow in Sendmail



Vendor Statement

        Hewlett-Packard Company
        HP Services
        Software Security Response Team

x-ref: SSRT3469

  HP released security bulletins for this issue on 03 March 2003
 and recently updated 11 March 2003 for Internet Express and

  View at www.hp.com  and in the search window type SSRT3469

  For HP-UX use your normal ITRC access and select Security
 Bulletin HPSBUX0302-246

    This problem affects supported versions of HP-UX,
   HP Tru64 UNIX/TruCluster Server,
   HP AlphaServer SC (Sierra Cluster) V2.5,
   HP Internet Express,
   HP AltaVista Firewall (AVFW98 / Raptor EC).

    NOTE: This problem does not impact
                HP NonStop Servers nor  HP OpenVMS.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Vendor References



The following is an archived copy of the Hewlett-Packard Security Bulletin regarding this vulnerability:

Hash: SHA1

**REVISED 05**

Originally issued: 03 March 2003
Last revised: 18 August 2003
SSRT3469 Potential Security Vulnerability in sendmail (rev.5)

NOTICE: There are no restrictions for distribution of this
Bulletin provided that it remains complete and intact.

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: Potential security vulnerability in sendmail

IMPACT: Potential unauthorized Privileged Access,
Potential Denial of Service (DoS).

PLATFORM: HP 9000 Series 700/800 Servers running HP-UX B.10.10,
B.10.20, B.11.00, B.11.04(VVOS), B.11.11, and B.11.22.

**REVISED 05**
SOLUTION: B.10.10 - write to security-alert@hp.com for information

-->      B.10.20 - install PHNE_28760
-->      B.11.00 (sendmail-8.9.3) - install PHNE_28809
-->      B.11.00 (sendmail-8.11.1) - install web upgrade
-->      B.11.04 - install PHNE_29526
-->      B.11.11 (sendmail-8.9.3) - install PHNE_28810
-->      B.11.11 (sendmail-8.11.1) - install web upgrade
-->      B.11.22 - install PHNE_28409

write to security-alert@hp.com for information
All versions:
Modify /etc/mail/sendmail.cf

AVAILABILITY: Fixes are available for B.10.10, B.10.20, B.11.00,
B.11.04(VVOS), B.11.11, and B.11.22.

CHANGE SUMMARY: Rev.01 - Added information on upgrading from
8.8.6 to 8.9.3 or 8.11.1.
Added information on warning messages.
Added CERT and CVE reference numbers.

Rev.02 - Corrected typo.
Added 11.04(VVOS) information.
Added 8.7.x to list of affected versions.

Rev.03 - Added HPSecurityBul246.depot information.
Replaced  sendmail.811.11.11 file
with sendmail.811.11.11.r1.
Renamed sendmail.886.10.01 to

Clarified installation instructions.

Rev.04 - Added note about HPSBUX0304-253.
The files are in the SB246 subdirectory
on the ftp site.

Rev.05 - patches and web upgrades available.
A. Background

A potential security vulnerability with sendmail has been
reported in HP-UX.  This potential vulnerability may result
in unauthorized Privileged Access or a Denial of Service
(DoS).  This potential vulnerability may be exploited

This is the vulnerability reported in CERT/CC CA-2003-07.
CERT/CC is tracking this issue as VU#398025  This reference
number corresponds to CVE candidate CAN-2002-1337.

This problem also affects HP Tru64 UNIX/Trucluster Server.
NOTE: This problem does not impact HP NonStop Servers nor

The  HP Tru64 bulletin will be posted to the customer
support website within 24 hours of release to -
or www.hp.com
Use the SEARCH IN feature box, enter SSRT in the
search window or use a specific SSRT #
example: SSRT3469

HP ProLiant Servers
If running Open Source Sendmail, refer to the following
Sendmail Consortium URL for patch details or upgrades:
As more information becomes available HP
will provide notice of the availability of any
necessary patches through standard security
bulletin announcements and be available from your
normal HP Services support channel.

HP NonStop Servers


The following is a list by HP-UX revision of
affected filesets and the fileset revision or
patch containing the fix.  To determine if a
system has an affected version, search the
output of "swlist -a revision -l fileset"
for an affected fileset, then determine if
a fixed revision or the applicable patch is

HP-UX B.11.22
fix: PHNE_28409 or subsequent

Modify /etc/mail/sendmail.cf

**REVISED 05**
HP-UX B.11.11

--> fix: B. or subsequent
-->     (web upgrade to Sendmail 8.11.1 Version 5
-->      or subsequent)

Modify /etc/mail/sendmail.cf

fix: PHNE_28810 or subsequent

Modify /etc/mail/sendmail.cf

HP-UX B.11.04

--> fix: PHNE_29526 or subsequent

HP-UX B.11.00

--> fix: B. or subsequent
-->     (web upgrade to Sendmail 8.11.1 Version 4
-->      or subsequent)

Modify /etc/mail/sendmail.cf

fix: PHNE_28809 or subsequent

Modify /etc/mail/sendmail.cf

HP-UX B.10.20
fix: PHNE_28760 or subsequent

Modify /etc/mail/sendmail.cf

**REVISED 05**
HP-UX B.10.10

--> fix: write to security-alert@hp.com for information


B. Recommended solution

Modify /etc/mail/sendmail.cf as follows:

Add "restrictqrun" to the PrivacyOptions.
After the change the line should read:

O PrivacyOptions=authwarnings,restrictqrun

Then install the patch or upgrade.

Determine the sendmail version:

Login in as root:
cd /usr/sbin
sendmail -d0.1 < /dev/null | grep -i version

The display will show Version #.#.#

Install the fix for that version as described below.

HP-UX B.11.22 sendmail 8.11.1
PHNE_28409 is now available.

**REVISED 05**
HP-UX B.11.00 and B.11.11 sendmail 8.11.1

-->    A web upgrade is available from software.hp.com:

HP-UX B.11.11 sendmail 8.9.3
PHNE_28810 is now available.

-->HP-UX B.11.04 sendmail 8.9.3
-->    PHNE_29526 is now available.

HP-UX B.11.00 sendmail 8.9.3
PHNE_28809 is now available.

HP-UX B.10.20 sendmail 8.9.3
PHNE_28760 is now available.

-->For B.10.10 write to security-alert@hp.com for information.

Note: If you receive either of the following messages after
applying the fix, please follow the recommended action.

warning: /etc/mail/aliases has world read or
write permission. This is unsafe.

warning: /etc/mail/aliases.db has world read or
write permission. This is unsafe.

Recommended action

Execute the following commands.

chmod 640 /etc/mail/aliases
chmod 640 /etc/mail/aliases.db
sendmail -bi

C. To subscribe to automatically receive future NEW HP Security
Bulletins from the HP IT Resource Center via electronic
mail, do the following:

Use your browser to get to the HP IT Resource Center page


Use the 'Login' tab at the left side of the screen to login
using your ID and password.  Use your existing login or the
"Register" button at the left to create a login, in order to
gain access to many areas of the ITRC.  Remember to save the
User ID assigned to you, and your password.

In the left most frame select "Maintenance and Support".

Under the "Notifications" section (near the bottom of
the page), select "Support Information Digests".

To -subscribe- to future HP Security Bulletins or other
Technical Digests, click the check box (in the left column)
for the appropriate digest and then click the "Update
Subscriptions" button at the bottom of the page.


To -review- bulletins already released, select the link
(in the middle column) for the appropriate digest.

NOTE: Using your itrc account security bulletins can be
found here:


To -gain access- to the Security Patch Matrix, select
the link for "The Security Bulletins Archive".  (near the
bottom of the page)  Once in the archive the third link is
to the current Security Patch Matrix. Updated daily, this
matrix categorizes security patches by platform/OS release,
and by bulletin topic.  Security Patch Check completely
automates the process of reviewing the patch matrix for
11.XX systems.

For information on the Security Patch Check tool, see:

The security patch matrix is also available via anonymous


On the "Support Information Digest Main" page:
click on the "HP Security Bulletin Archive".

The PGP key used to sign this bulletin is available from
several PGP Public Key servers.  The key identification
information is:

HP Security Response Team (Security Bulletin signing only)
Fingerprint =

6002 6019 BFC1 BC62 F079 862E E01F 3AFC 2D2A 7D59

If you have problems locating the key please write to
security-alert@hp.com.  Please note that this key is
for signing bulletins only and is not the key returned
by sending 'get key' to security-alert@hp.com.

D. To report new security vulnerabilities, send email to


Please encrypt any exploit information using the
security-alert PGP key, available from your local key
server, or by sending a message with a -subject- (not body)
of 'get key' (no quotes) to security-alert@hp.com.


(c)Copyright 2003 Hewlett-Packard Company
Hewlett-Packard Company shall not be liable for technical or
editorial errors or omissions contained herein. The information
in this document is subject to change without notice.
Hewlett-Packard Company and the names of HP products referenced
herein are trademarks and/or service marks of Hewlett-Packard
Company.  Other product and company names mentioned herein may be
trademarks and/or service marks of their respective owners.


Version: PGP Personal Security 7.0.3


If you have feedback, comments, or additional information about this vulnerability, please send us email.