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Category:   Application (E-mail Server)  >   Sendmail Vendors:   Sendmail Consortium
(HP Issues Fix for Tru64) Sendmail Prescan Flaw May Let Remote Users Execute Arbitrary Code With Root Privileges
SecurityTracker Alert ID:  1008082
SecurityTracker URL:  http://securitytracker.com/id/1008082
CVE Reference:   CVE-2003-0694   (Links to External Site)
Date:  Nov 3 2003
Impact:   Execution of arbitrary code via local system, Execution of arbitrary code via network, Root access via local system, Root access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 8.12.9 and prior versions
Description:   A vulnerability was reported in Sendmail. A local or remote user may be able to execute arbitrary code on the target system.

It is reported that the prescan() function in 'parseaddr.c' contains a flaw [that is different than previously reported prescan flaw]. The report states that various exploit methods are possible, but these exploit methods were not disclosed.

The report indicates that it is confirmed that a local user can exploit this flaw and it is believed that a remote user may also exploit this flaw.

Impact:   A local or remote user may be able to execute arbitrary code with the privileges of the sendmail process.
Solution:   HP has issued the following Early Release Patches:

HP Tru64 UNIX 5.1B
PREREQUISITE: HP Tru64 UNIX with 5.1B with PK2 (BL24) installed
ERP Kit Name: T64KIT0020437-V51BB24-ES-20031001.tar
General ITRC Patch Page:
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64KIT0020437-V51BB24-ES-20031001

HP Tru64 UNIX 5.1B
PREREQUISITE: HP Tru64 UNIX with 5.1B with PK2 (BL22) installed
ERP Kit Name: T64KIT0020135-V51BB22-ES-20031001.tar
General ITRC Patch Page:
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64KIT0020135-V51BB22-ES-20031001

HP Tru64 UNIX 5.1B
PREREQUISITE: HP Tru64 UNIX with 5.1B with patch kit prior to
PK2
(BL22) installed
Please upgrade to 5.1B PK2 (BL22) and apply the above patch kit.

HP Tru64 UNIX 5.1A
PREREQUISITE: HP Tru64 UNIX with 5.1A with PK5 (BL23) installed
ERP Kit Name: T64KIT0020137-V51AB23-ES-20031001.tar
General ITRC Patch Page:
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64KIT0020137-V51AB23-ES-20031001

HP Tru64 UNIX 5.1A
PREREQUISITE: HP Tru64 UNIX with 5.1A with PK4 (BL21) installed
ERP Kit Name: T64KIT0020138-V51AB21-ES-20031001.tar
General ITRC Patch Page:
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64KIT0020138-V51AB21-ES-20031001

HP Tru64 UNIX 5.1
PREREQUISITE: HP Tru64 UNIX with 5.1A with PK6 (BL20) installed
ERP Kit Name: T64KIT0020139-V51B20-ES-20031001.tar
General ITRC Patch Page:
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64KIT0020139-V51B20-ES-20031001

HP Tru64 UNIX 4.0F
PREREQUISITE: HP Tru64 UNIX with 4.0F with PK4 (BL22) installed
ERP Kit Name: DUXKIT0020136-V40FB22-ES-20031001.tar
General ITRC Patch Page:
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
DUXKIT0020136-V40FB22-ES-20031001

HP Tru64 UNIX 4.0F
PREREQUISITE: HP Tru64 UNIX with 4.0F with PK7 (BL18) installed
ERP Kit Name: DUXKIT0020134-V40FB18-ES-20031001.tar
General ITRC Patch Page:
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
DUXKIT0020134-V40FB18-ES-20031001

HP Tru64 UNIX 4.0G
PREREQUISITE: HP Tru64 UNIX with 4.0G with PK4 (BL22) installed
ERP Kit Name: T64KIT0020132-V40GB22-ES-20031001.tar
General ITRC Patch Page:
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64KIT0020132-V40GB22-ES-20031001

HP Tru64 UNIX 4.0G
PREREQUISITE: HP Tru64 UNIX with 4.0G with PK3 (BL17) installed
ERP Kit Name: T64KIT0020133-V40GB17-ES-20031001.tar
General ITRC Patch Page:
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64KIT0020133-V40GB17-ES-20031001

The following ERP kits are available for HP Tru64 UNIX (IX) Internet
Express:

NOTE: These ERPs include updates to the solution provided for
SSRT3612.

HP Tru64 UNIX Internet Express (IX) Sendmail v6.12
ERP Kit Name: T64V51AB-IX-612-SENDMAIL-SSRT3631.tar
General ITRC Patch Page:
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64V51AB-IX-612-SENDMAIL-SSRT3631

HP Tru64 UNIX Internet Express (IX) Sendmail v6.03
ERP Kit Name: T64V51AB-IX-603-SENDMAIL-SSRT3631.tar
General ITRC Patch Page:
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64V51AB-IX-603-SENDMAIL-SSRT3631

HP Tru64 UNIX Internet Express (IX) Sendmail v5.94
ERP Kit Name: T64V51AB-IX-594-SENDMAIL-SSRT3631.tar
General ITRC Patch Page:
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64V51AB-IX-594-SENDMAIL-SSRT3631

HP Tru64 UNIX Internet Express (IX) Sendmail v5.86
ERP Kit Name: T64V51AB-IX-586-SENDMAIL-SSRT3631.tar
General ITRC Patch Page:
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64V51AB-IX-586-SENDMAIL-SSRT3631

HP Tru64 UNIX Internet Express (IX) Sendmail v5.74
ERP Kit Name: T64V51AB-IX-574-SENDMAIL-SSRT3631.tar
General ITRC Patch Page:
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64V51AB-IX-574-SENDMAIL-SSRT3631

HP Tru64 UNIX Internet Express (IX) Sendmail v5.63
ERP Kit Name: T64V51AB-IX-563-SENDMAIL-SSRT3631.tar
General ITRC Patch Page:
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64V51AB-IX-563-SENDMAIL-SSRT3631

HP Tru64 UNIX Internet Express (IX) Sendmail v5.53
ERP Kit Name: T64V51AB-IX-553-SENDMAIL-SSRT3631.tar
General ITRC Patch Page:
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64V51AB-IX-553-SENDMAIL-SSRT3631

HP Tru64 UNIX Internet Express (IX) Sendmail v5.43
ERP Kit Name: T64V51AB-IX-543-SENDMAIL-SSRT3631.tar
General ITRC Patch Page:
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64V51AB-IX-543-SENDMAIL-SSRT3631

Vendor URL:  www.sendmail.org/8.12.10.html (Links to External Site)
Cause:   Boundary error
Underlying OS:  UNIX (Tru64)
Underlying OS Comments:  4.0F, 4.0G, 5.1, 5.1A, 5.1B

Message History:   This archive entry is a follow-up to the message listed below.
Sep 17 2003 Sendmail Prescan Flaw May Let Remote Users Execute Arbitrary Code With Root Privileges



 Source Message Contents

Subject:  Security Bulletin SSRT3631 - Tru64 UNIX sendmail Potential Security Vulnerability


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

SECURITY BULLETIN

REVISION: 1

SSRT3631 - Tru64 UNIX sendmail Potential Security Vulnerability

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

RELEASE DATE: 30 October 2003

SEVERITY:  1

SOURCE:  HEWLETT-PACKARD COMPANY
Software Security Response Team

REFERENCE:  CA-2003-25, SSRT3612, SSRT3531

PROBLEM SUMMARY
A potential security vulnerability has been identified in
sendmail where a buffer overflow could result in a local or
remote user gaining unauthorized privileged access.

VERSIONS IMPACTED
All currently supported versions of HP Tru64 UNIX running
sendmail including:

HP Tru64 UNIX 5.1B  All Base levels

HP Tru64 UNIX 5.1A  All Base levels

HP Tru64 UNIX 5.1   All Base levels

HP Tru64 UNIX 4.0G  All Base levels

HP Tru64 UNIX 4.0F  All Base levels

and

HP Tru64 UNIX (IX) Internet Express running sendmail versions
8.9.3 through 8.12.9 which were delivered with IX kit versions
5.43 through 6.12.

To determine if this patch kit is needed

If the installed the version of sendmail was shipped with
affected versions of HP Tru64 UNIX or HP Tru64 UNIX (IX)
Internet Express versions 5.4 through 6.1 a patch will be
required.  Sendmail versions 8.9.3 through 8.12.9 are affected.

To determine the version of sendmail run the following command:

# /usr/sbin/sendmail -d0.1

Version 8.9.3
 Compiled with: some verbiage


RESOLUTION

Until the resolutions are available in HP Tru64 UNIX mainstream
release patch kits, HP is releasing the following Early Release
Patch (ERP) kits.

The fixes contained in the ERP kits are scheduled to be available
in the following mainstream patch kits:

     HP Tru64 UNIX V5.1B PK4

     HP Tru64 UNIX V5.1A PK6

NOTE: New 2048 byte maximum line enforcement for Tru64 UNIX
versions 5.1B, 5.1A and 5.1

The patched versions of sendmail for Tru64 UNIX versions 5.1B, 5.1A
and 5.1 include updated code from sendmail.org that enforces a
maximum
line length of 2048 bytes within a message.

If there is an application or other need to issue lines that exceed
2048 bytes, override the line length enforcement by entering the
following line in the sendmail.cf file:

MaxMimeHeaderLength=-1/-1

Early Release Patches

The ERP kits use dupatch to install and will not install over any
installed Customer Specific Patches (CSPs) that have file
intersections
with the ERPs.  Contact the appropriate HP Services support channel
for
assistance if the installation of the ERPs is blocked by any
installed CSPs.

For alternatives to using the Dupach ERP kit solutions for the HP
Tru64
UNIX Base OS please see the following Web page:
http://h30097.www3.hp.com/unix/AlternativesToUsingDupatch.htm.

The following ERP kits are available for HP Tru64 UNIX:

NOTE: These currently released ERPs do have file interactions with
the
ERPs provided to resolve SSRT3531 i.e. 5.1A PK4 (BL21), 5.1 PK6
(BL20),
4.0G PK3 (BL17), 4.0F PK7 (BL18) however, they are designed to
install
standalone or seamlessly over the previous SSRT3531 patch kits.

HP Tru64 UNIX 5.1B
PREREQUISITE:      HP Tru64 UNIX with 5.1B with PK2 (BL24) installed
ERP Kit Name: T64KIT0020437-V51BB24-ES-20031001.tar
General ITRC Patch Page: 
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64KIT0020437-V51BB24-ES-20031001

HP Tru64 UNIX 5.1B
PREREQUISITE:      HP Tru64 UNIX with 5.1B with PK2 (BL22) installed
ERP Kit Name: T64KIT0020135-V51BB22-ES-20031001.tar
General ITRC Patch Page: 
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64KIT0020135-V51BB22-ES-20031001

HP Tru64 UNIX 5.1B
PREREQUISITE:      HP Tru64 UNIX with 5.1B with patch kit prior to
PK2
(BL22) installed
Please upgrade to 5.1B PK2 (BL22) and apply the above patch kit.

HP Tru64 UNIX 5.1A
PREREQUISITE:      HP Tru64 UNIX with 5.1A with PK5 (BL23) installed
ERP Kit Name: T64KIT0020137-V51AB23-ES-20031001.tar
General ITRC Patch Page: 
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64KIT0020137-V51AB23-ES-20031001

HP Tru64 UNIX 5.1A
PREREQUISITE:      HP Tru64 UNIX with 5.1A with PK4 (BL21) installed
ERP Kit Name: T64KIT0020138-V51AB21-ES-20031001.tar
General ITRC Patch Page: 
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64KIT0020138-V51AB21-ES-20031001

HP Tru64 UNIX 5.1
PREREQUISITE:      HP Tru64 UNIX with 5.1A with PK6 (BL20) installed
ERP Kit Name: T64KIT0020139-V51B20-ES-20031001.tar
General ITRC Patch Page: 
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64KIT0020139-V51B20-ES-20031001

HP Tru64 UNIX 4.0F
PREREQUISITE:      HP Tru64 UNIX with 4.0F with PK4 (BL22) installed
ERP Kit Name: DUXKIT0020136-V40FB22-ES-20031001.tar
General ITRC Patch Page: 
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
DUXKIT0020136-V40FB22-ES-20031001

HP Tru64 UNIX 4.0F
PREREQUISITE:      HP Tru64 UNIX with 4.0F with PK7 (BL18) installed
ERP Kit Name: DUXKIT0020134-V40FB18-ES-20031001.tar
General ITRC Patch Page: 
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
DUXKIT0020134-V40FB18-ES-20031001

HP Tru64 UNIX 4.0G
PREREQUISITE:      HP Tru64 UNIX with 4.0G with PK4 (BL22) installed
ERP Kit Name:  T64KIT0020132-V40GB22-ES-20031001.tar
General ITRC Patch Page: 
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64KIT0020132-V40GB22-ES-20031001

HP Tru64 UNIX 4.0G
PREREQUISITE:      HP Tru64 UNIX with 4.0G with PK3 (BL17) installed
ERP Kit Name: T64KIT0020133-V40GB17-ES-20031001.tar
General ITRC Patch Page: 
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64KIT0020133-V40GB17-ES-20031001

The following ERP kits are available for HP Tru64 UNIX (IX) Internet
Express:

NOTE: These ERPs include updates to the solution provided for
SSRT3612.

HP Tru64 UNIX Internet Express (IX) Sendmail v6.12
ERP Kit Name:  T64V51AB-IX-612-SENDMAIL-SSRT3631.tar
General ITRC Patch Page: 
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64V51AB-IX-612-SENDMAIL-SSRT3631

HP Tru64 UNIX Internet Express (IX) Sendmail v6.03
ERP Kit Name:  T64V51AB-IX-603-SENDMAIL-SSRT3631.tar
General ITRC Patch Page: 
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64V51AB-IX-603-SENDMAIL-SSRT3631

HP Tru64 UNIX Internet Express (IX) Sendmail v5.94
ERP Kit Name:  T64V51AB-IX-594-SENDMAIL-SSRT3631.tar
General ITRC Patch Page: 
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64V51AB-IX-594-SENDMAIL-SSRT3631

HP Tru64 UNIX Internet Express (IX) Sendmail v5.86
ERP Kit Name:  T64V51AB-IX-586-SENDMAIL-SSRT3631.tar
General ITRC Patch Page: 
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64V51AB-IX-586-SENDMAIL-SSRT3631

HP Tru64 UNIX Internet Express (IX) Sendmail v5.74
ERP Kit Name:  T64V51AB-IX-574-SENDMAIL-SSRT3631.tar
General ITRC Patch Page: 
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64V51AB-IX-574-SENDMAIL-SSRT3631

HP Tru64 UNIX Internet Express (IX) Sendmail v5.63
ERP Kit Name:  T64V51AB-IX-563-SENDMAIL-SSRT3631.tar
General ITRC Patch Page: 
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64V51AB-IX-563-SENDMAIL-SSRT3631

HP Tru64 UNIX Internet Express (IX) Sendmail v5.53
ERP Kit Name:  T64V51AB-IX-553-SENDMAIL-SSRT3631.tar
General ITRC Patch Page: 
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64V51AB-IX-553-SENDMAIL-SSRT3631

HP Tru64 UNIX Internet Express (IX) Sendmail v5.43
ERP Kit Name:  T64V51AB-IX-543-SENDMAIL-SSRT3631.tar
General ITRC Patch Page: 
http://www.itrc.hp.com/service/patch/mainPage.do
Kit Location:
http://www.itrc.hp.com/service/patch/patchDetail.do?patchid=
T64V51AB-IX-543-SENDMAIL-SSRT3631

To determine if sendmail has been successfully patched following
installation of the ERP

To determine if a patch is installed run the following command:

# /usr/sbin/sendmail -d0.1
  Version 8.9.3 Compiled with: some verbiage Includes patches for:
SSRT3469 SSRT3531  SSRT3631   <-- confirmation of patch  install


MD5 and SHA1 checksums are available in the public patch notice for
the
ERP kits. You can find information on how to verify MD5 and SHA1
checksums
at:  http://www.support.compaq.com/patches/whats-new.shtml


SUPPORT: For further information, contact HP Services.

SUBSCRIBE: To subscribe to automatically receive future Security
Advisories
from the Software Security Response Team via electronic mail:
http://www.support.compaq.com/patches/mail-list.shtml

REPORT: To report a potential security vulnerability with any HP
supported
product, send email to: security-alert@hp.com

As always, HP urges you to periodically review your system management

and
security procedures. HP will continue to review and enhance the
security
features of its products and work with our customers to maintain and
improve
the security and integrity of their systems.

"HP is broadly distributing this Security Bulletin in order to bring
to the
attention of users of the affected HP products the important security
information contained in this Bulletin. HP recommends that all users
determine the applicability of this information to their individual
situations and take appropriate action. HP does not warrant that this
information is necessarily accurate or complete for all user
situations and,
consequently, HP will not be responsible for any damages resulting
from
user's use or disregard of the information provided in this
Bulletin."

(c)Copyright 2003 Hewlett-Packard Development Company, L.P.
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
Hewlett-Packard
products referenced herein are trademarks of Hewlett-Packard Company
in the
United States and other countries. Other product and company names
mentioned
herein may be trademarks of their respective owners.

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