Date: 04 December 2003
References: ESB-2003.0805 ESB-2003.0862
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AUSCERT External Security Bulletin Redistribution
ESB-2003.0833 -- HEWLETT-PACKARD SECURITY BULLETIN: HPSBUX0309-281
SSRT3631 Rev.6 sendmail
04 December 2003
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AusCERT Security Bulletin Summary
---------------------------------
Product: sendmail
Publisher: Hewlett-Packard
Operating System: HP-UX 11.23
HP-UX 11.22
HP-UX 11.11
HP-UX 11.04 (VVOS)
HP-UX 11.00
Impact: Root Compromise
Access Required: Remote
CVE Names: CAN-2003-0694 CAN-2003-0681
Ref: AL-2003.17
ESB-2003.0805
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**REVISED 06**
Source: HEWLETT-PACKARD COMPANY
SECURITY BULLETIN: HPSBUX0309-281
Originally issued: 21 September 2003
Last revised: 02 December 2003
SSRT3631 Rev.6 sendmail
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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.
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PROBLEM: Potential security vulnerability in sendmail
IMPACT: Potential unauthorized Privileged Access.
PLATFORM: HP-UX releases B.11.00, B.11.04 (VVOS), B.11.11,
B.11.22, B.11.23
SOLUTION:
--> B.11.00 - Sendmail 8.9.3 - PHNE_29773
--> B.11.00 - Sendmail 8.11.1 - B.11.00.01.005
--> B.11.04 - HPSecurityBul281b.depot
--> B.11.11 - Sendmail 8.9.3 - PHNE_29774
--> B.11.11 - Sendmail 8.11.1 - B.11.00.01.006
--> B.11.22 - HPSecurityBul281b.depot
--> B.11.23 - HPSecurityBul281b.depot
MANUAL ACTIONS: Yes - NonUpdate
All revisions - modify /etc/mail/sendmail.cf
as described below and in
HPSBUX0304-253.
B.11.00 - Sendmail 8.11.1 - Update to
B.11.00.01.005
B.11.11 - Sendmail 8.11.1 - Update to
B.11.00.01.006
B.11.04, B.11.22, and B.11.23 - Download and
install HPSecurityBul281b.depot.
AVAILABILITY: HPSecurityBul281b.depot is available from the
ftp site described below.
CHANGE SUMMARY: Rev.01 - Added CAN-2003-0681.
Rev.02 - sendmail.811.11.22.r5 replaces
sendmail.811.11.22.r4.
Rev.03 - HPSecurityBul281.depot available.
Rev.04 - HPSecurityBul281a.depot available.
Rev.05 - HPSecurityBul281b.depot adds B.11.23
and corrects B.11.22.
Rev.06 - Added PHNE_29773 and PHNE_29774.
Added Sendmail 8.11.1 B.11.00.01.005.
Added Sendmail 8.11.1 B.11.00.01.006.
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A. Background
A potential security vulnerability with sendmail has been
reported in HP-UX. This potential vulnerability may result
in unauthorized Privileged Access.
This is the vulnerability reported in CERT/CC CA-2003-25:
<http://www.cert.org/advisories/CA-2003-25.html>
New versions are available which also address the
the issue reported here:
<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0681>
**REVISED 06**
AFFECTED VERSIONS
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
installed.
HP-UX B.11.23
=============
InternetSrvcs.INETSVCS2-RUN
InternetSrvcs.INETSVCS-RUN
fix: install HPSecurityBul281b.depot
modify /etc/mail/sendmail.cf
HP-UX B.11.22
=============
InternetSrvcs.INETSVCS2-RUN
InternetSrvcs.INETSVCS-RUN
fix: install HPSecurityBul281b.depot
modify /etc/mail/sendmail.cf
HP-UX B.11.11
=============
SMAIL-811.INETSVCS-SMAIL
--> fix: install revision B.11.00.01.006 or subsequent
modify /etc/mail/sendmail.cf
InternetSrvcs.INETSVCS-RUN
--> fix: install PHNE_29774 or subsequent
modify /etc/mail/sendmail.cf
HP-UX B.11.04
=============
InternetSrvcs.INETSVCS-RUN
fix: install HPSecurityBul281b.depot
modify /etc/mail/sendmail.cf
HP-UX B.11.00
=============
SMAIL-811.INETSVCS-SMAIL
--> fix: install revision B.11.00.01.005 or subsequent
modify /etc/mail/sendmail.cf
InternetSrvcs.INETSVCS-RUN
--> fix: install PHNE_29773 or subsequent
modify /etc/mail/sendmail.cf
END AFFECTED VERSIONS
B. Recommended solution
**REVISED 06**
--> All versions:
--> =============
--> If the following changes to /etc/mail/sendmail.cf were
--> not done when HPSBUX0304-253 was implemented they should
--> be done now:
--> Modify /etc/mail/sendmail.cf as follows:
--> Add "restrictqrun" to the PrivacyOptions.
--> After the change the line should read:
--> O PrivacyOptions=authwarnings,restrictqrun
--> Patches and web upgrades are now available for
--> B.11.00 and B.11.11. HPSecurityBul281b should
--> be removed before installing the patch or web upgrade:
--> swremove HPSecurityBul281b.INETSVCS-RUN
-->B.11.00:
--> Sendmail 8.9.3 - install PHNE_29773 or subsequent.
--> Sendmail 8.11.1 - install the web upgrade B.11.00.01.005
--> or subsequent.
-->B.11.11
--> Sendmail 8.9.3 - install PHNE_29774 or subsequent.
--> Sendmail 8.11.1 - install the web upgrade B.11.00.01.006
--> or subsequent.
-->B.11.04, B.11.22, and B.11.23:
-->1. Install the patches recommended in HPSBUX0304-253.
-->2. Download and install HPSecurityBul281b.depot
Note: To preserve the original version of sendmail,
HPSecurityBul281a.depot should be removed before
installing HPSecurityBul281b.depot. However,
there is no need to install HPSecurityBul281b.depot
on B.11.00 and B.11.11 systems where
HPSecurityBul281a.depot was previously installed
without error.
The HPSecurityBul281 depot has had two revisions.
The revision history is:
HPSecurityBul281a.depot corrected a packaging
issue with sendmail.893.11.11.r4.
HPSecurityBul281b.depot corrected a packaging
issue with sendmail.811.11.22.r5 and added
sendmail.811.11.23.r1.
The sendmail files in each of these depots are
identical to the unpackaged files listed in
the original version of this bulletin with the
exception of sendmail.811.11.23.r1. This file
is new as of HPSecurityBul281b.depot.
Note: The filenames in HPSecurityBul281 depots
(for example, sendmail.811.11.22.r5) have been
created for these depots. The "r5" is used to
differentiate the file from previous versions
packaged in temporary depots. It bears no
relation to any sendmail revision.
System: hprc.external.hp.com (192.170.19.51)
Login: sendmail
Password: sendmail
FTP Access: ftp://sendmail:sendmail@hprc.external.hp.com/
or: ftp://sendmail:sendmail@192.170.19.51/
or: ftp hprc.external.hp.com
Note: There is an ftp defect in IE5 that may result in
a browser hang. To work around this:
- Select Tools -> Internet Options -> Advanced
- Un-check the option:
[ ] Enable folder view for FTP sites
File: HPSecurityBul281b.depot.gz
==================================================
--> For B.11.04, B.11.22, and B.11.23:
1. Install the patches recommended in HPSBUX0304-253.
2. Download and install HPSecurityBul281b.depot
Details:
1. HPSBUX0304-253
MUST
be implemented before proceeding.
2. Download and install HPSecurityBul281b.depot.gz:
a. Download HPSecurityBul281b.depot.gz
b. Unpack the file with gunzip(1)
c. Verify the cksum or the md5 sum.
cksum:
17704519 8601600 HPSecurityBul281b.depot
md5:
MD5 (HPSecurityBul281b.depot) =
5dfbc286756bc8eba44c4ecce67a1422
d. Extract the "readme" file for further information:
cd directory_containing_depot
swlist -d -l product -a readme
@ $PWD/HPSecurityBul281b.depot
e. Install HPSecurityBul281b.depot with swinstall(1).
==================================================
Note: If you receive either of the following messages after
applying the updates, 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
at:
http://itrc.hp.com
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.
or
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:
http://itrc.hp.com/cki/bin/doc.pl/screen=ckiSecurityBulletin
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:
http://www.software.hp.com/cgi-bin/swdepot_parser.cgi/cgi/
displayProductInfo.pl?productNumber=B6834AA
The security patch matrix is also available via anonymous
ftp:
ftp://ftp.itrc.hp.com/export/patches/hp-ux_patch_matrix/
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:
2D2A7D59
HP Security Response Team (Security Bulletin signing only)
<security-alert@hp.com>
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
security-alert@hp.com
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.
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(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.
_________________________________________________________________
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