To: uniras@niscc.gov.uk
Subject: UNIRAS Brief - 553/03 - Two Hewlett-Packard Security Bulletins
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UNIRAS (UK Govt CERT) Briefing Notice - 553/03 dated 03.10.03 Time: 11:20
UNIRAS is part of NISCC(National Infrastructure Security Co-ordination Centre)
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UNIRAS material is also available from its website at www.uniras.gov.uk and
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Title
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Two Hewlett-Packard Security Bulletins:
1. Potential Security Vulnerabilities in Apache HTTP Server.
2. smrsh restrictions bypass (rev.2).
Detail
======
1. Certain ASN.1 encodings that are rejected as invalid by the parser can
trigger a bug in the deallocation of the corresponding data structure,
corrupting the stack. This can be used as a denial of service attack.
It is currently unknown whether this can be exploited to run malicious code.
2. Sendmail Restricted Shell (smrsh) may let local users bypass restrictions
to execute code.
1. ESB-2003.0697 -- HEWLETT-PACKARD SECURITY BULLETIN: HPSBUX0310-284
SSRT3622 Potential Security Vulnerabilities in Apache HTTP Server
03 October 2003
Product: OpenSSL
Publisher: Hewlett-Packard
Operating System: HP-UX release 11.23
HP-UX release 11.22
HP-UX release 11.20
HP-UX release 11.11
HP-UX release 11.00
Impact: Denial of Service
Access Required: Remote
CVE Names: CAN-2003-0543, CAN-2003-0544, CAN-2003-0545
Ref: AL-2003.18
-----------------------------------------------------------------
Source: HEWLETT-PACKARD COMPANY
SECURITY BULLETIN: HPSBUX0310-284
Originally issued: 01 Oct 2003
SSRT3622 Potential Security Vulnerabilities in Apache HTTP Server
-----------------------------------------------------------------
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: 1. Certain ASN.1 encodings that are rejected as invalid
by the parser can trigger a bug in the deallocation
of the corresponding data structure, corrupting the
stack. This can be used as a denial of service
attack. It is currently unknown whether this can be
exploited to run malicious code. This issue does not
affect OpenSSL 0.9.6.
More details are available at:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0545
2. Unusual ASN.1 tag values can cause an out of bounds
read under certain circumstances, resulting in a
denial of service vulnerability.
More details are available at:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0543
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0544
3. A malformed public key in a certificate will crash
the verify code if it is set to ignore public key
decoding errors. Exploitation of an affected
application would result in a denial of service
vulnerability.
4. Due to an error in the SSL/TLS protocol handling,
a server will parse a client certificate when one is
not specifically requested.
IMPACT: Potential Denial of Service
PLATFORM: HP9000 Servers running HP-UX release B.11.00, B.11.11,
B.11.20, B.11.22, and B.11.23 with versions of the
following products are affected, and represented as:
product-name, version (product-tag/bundle-tag)
- hp apache-based web server, 2.0.43.04 or earlier
(HPApache/B9416AA)
This product includes OpenSSL 0.9.6b.
- hp-ux apache-based web server, v.1.0.06.02 or earlier
(hpuxwsAPACHE/hpuxwsApache)
This product includes OpenSSL 0.9.6i.
- hp apache-based web server, 2.0.43.04 (with IPv6
support), or earlier (HPApache/B9416BA)
This product includes OpenSSL 0.9.6b.
- hp-ux apache-based web server(with IPv6 support),
v.1.0.07.01 or earlier (hpuxwsAPACHE/hpuxwsApache)
This product includes OpenSSL 0.9.6i.
SOLUTION: For HP-UX releases B.11.00, B.11.11, B.11.20,
B.11.22, and B.11.23 download new HP Apache product
from the ftp site (see below for details).
For HPApache/B9416AA, HPApache/B9416BA and
hpuxwsAPACHE/hpuxwsApache download the following:
- hp-ux apache-based web server (with IPv4)
A.1.0.08.01 or later (hpuxwsAPACHE/hpuxwsApache)
This product includes OpenSSL 0.9.7b + patches.
- hp-ux apache-based web server(with IPv6 support),
B.1.0.08.01 or later (hpuxwsAPACHE/hpuxwsApache)
This product includes OpenSSL 0.9.7b + patches.
MANUAL ACTIONS: Yes - Update
Install the product containing the fix.
For customers with HPApache/B9416AA HPApache/B9416BA
installed, the fix requires removing the affected
products from the system and migration to
hpuxwsAPACHE/hpuxwsApache.
AVAILABILITY: Complete product bundles are available from
the ftp site (see below for details).
-----------------------------------------------------------------
A. Background
An SSL/TLS testing suite developed by the NISCC (National
Infrastructure Security Co-Ordination Centre in the UK) has
identified ASN.1 parsing vulnerabilities in OpenSSL.
The Common Vulnerabilities and Exposures project
has identified potential
vulnerabilities in the Apache HTTP Server (CAN-2003-0543,
CAN-2003-0544).
AFFECTED VERSIONS
==================
The affected filesets are: (product.fileset)
For IPv4:
HP-UX B.11.00
HP-UX B.11.11
HP-UX B.11.22
HPApache.APACHE2
hpuxwsAPACHE.APACHE2
fix: revision A.1.0.08.01 or subsequent
For IPv6:
HP-UX B.11.11
HP-UX B.11.23
=============
HPApache.APACHE2
hpuxwsAPACHE.APACHE2
fix: revision B.1.0.08.01 or subsequent
END AFFECTED VERSIONS
B. Recommended solution
For customers using HPApache/B9416BA and hpuxwsAPACHE/
hpuxwsApache, HP has incorporated OpenSSL 0.9.7b + patches
in the following product:
- hp-ux apache-based web server version 1.0.08.01 or later
System: hprc.external.hp.com (192.170.19.51)
Login: apache1
Password: apache1
FTP Access: ftp://apache1:apache1@hprc.external.hp.com/
or: ftp://apache1:apache1@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
==================================================
To fix the problem:
1. Determine the affected version.
2. Download and verify the cksum or md5 sum.
3. Install the appropriate Apache depot.
cksum:
2820606652 77844480 A.1.0.08.01.1100.depot
84183799 91555840 A.1.0.08.01.1122.depot
774435972 77875200 B.1.0.08.01.ipv6.depot
871663669 116940800 B.1.0.08.01.1123.depot
MD5:
A.1.0.08.01.1100.depot
4D60A779EEFFD5953EE52371E1F17AD9
A.1.0.08.01.1122.depot
483DBFF44D9B79C04CD1ABF71A692E05
B.1.0.08.01.1123.depot
B8B2D2609D2A43ABAD63BE0A3DC7C61E
B.1.0.08.01.ipv6.depot
866E9B4D3102EA6FF34CCCA8171B43CB
Check for Apache Installation
-----------------------------
To determine if the Apache web server from HP is installed on
your system, use Software Distributor's swlist command. All
three versions products may co-exist on a single system.
For example, the results of the command
swlist -l product | grep -i apache might show:
HPApache 2.0.39.01.02 HP Apache-based Web Server
hpuxwsAPACHE A.1.0.05.01 HP-UX Apache-based Web Server
Stop Apache
-----------------------------
Before updating, make sure to stop any previous Apache binary.
Otherwise, the previous binary will continue running,
preventing the new one from starting, although the
installation would be successful.
After determining which Apache is installed, stop Apache with
the following commands:
for HPApache: /opt/hpapache2/bin/apachectl stop
for hpuxwsAPACHE: /opt/hpws/apache/bin/apachectl stop
Download and Install Apache
-----------------------------
- Download Apache from temporary ftp site using the previously
mentioned links.
- Verify successful download by comparing the cksum/md5 with
the value specified on the installation web page.
- Use SD to swinstall the depot.
- For customers with HPApache/B9416BA installed, migrate to
hpuxwsAPACHE/hpuxwsApache and remove the affected products
from the system.
Installation of this new version of HP Apache over an existing
HP Apache installation is supported, while installation over a
non-HP Apache is NOT supported.
Removing Apache Installation
----------------------------
If you rather remove Apache from your system than install a
newer version to resolve the security problem, use both
Software Distributor's "swremove" command and also "rm -rf"
the home location as specified in the rc.config.d file "HOME"
variables.
To find the files containing HOME variables in the
/etc/rc.config.d directory:
%ls /etc/rc.config.d | grep apache
hpapache2conf
hpws_apacheconf
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. Please note that installing the patches
listed in the Security Patch Matrix will completely
implement a security bulletin _only_ if the MANUAL ACTIONS
field specifies "No."
The Security Patch Check tool can verify that a security
bulletin has been implemented on HP-UX 11.XX systems providing
that the fix is completely implemented in a patch with no
manual actions required. The Security Patch Check tool cannot
verify fixes implemented via a product upgrade.
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)
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.
-----------------------------------------------------------------
(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.
________________________________________________________________
2. ESB-2003.0696 -- HEWLETT-PACKARD SECURITY BULLETIN: HPSBUX0212-234
SSRT2432 smrsh restrictions bypass (rev.2)
03 October 2003
Product: smrsh (Sendmail Restricted Shell)
Publisher: Hewlett-Packard
Operating System: HP-UX 11.00
HP-UX 11.11
HP-UX 11.22
Impact: Execute Arbitrary Code/Commands
Access Required: Remote
Ref: ESB-2002.721
**REVISED 02**
Source: HEWLETT-PACKARD COMPANY
SECURITY BULLETIN: HPSBUX0212-234
Originally issued: 19 December 2002
Last revision: 30 September 2003
SSRT2432 smrsh restrictions bypass (rev.2)
-----------------------------------------------------------------
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: Sendmail Restricted Shell (smrsh) may let local users
bypass restrictions to execute code.
IMPACT: The potential vulnerability may allow authorized users
to execute unauthorized programs.
PLATFORM: HP-UX B.11.00, B.11.11, B.11.22 running sendmail
version 8.11.1 ONLY.
SOLUTION: B.11.22 - PHNE_28409 or subsequent
B.11.11 - Web upgrade
B.11.00 - Web upgrade
MANUAL ACTIONS: Yes - Update
Update B.11.00 and B.11.11.
A patch is available for B.11.22.
No manual action is required for B.11.22.
AVAILABILITY: The patch and web upgrades are available now.
CHANGE SUMMARY: Rev.01 - Only sendmail version 8.11.1
is vulnerable.
Rev.02 - Patch and web upgrades are available.
Added AFFECTED VERSIONS section.
-----------------------------------------------------------------
A. Background
Sendmail Restricted Shell (smrsh) may let local users
bypass restrictions to execute code. The only vulnerable
version delivered on HP-UX is sendmail 8.11.1. This version
is available as a web upgrade for HP-UX B.11.00 and B.11.11.
Sendmail version 8.11.1 is delivered with HP-UX B.11.22.
**REVISED 02**
--> 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.11.22
=============
InternetSrvcs.INETSVCS2-RUN
InternetSrvcs.INETSVCS-RUN
fix: PHNE_28409 or subsequent
HP-UX B.11.11
=============
SMAIL-811.INETSVCS-SMAIL
fix: revision B.11.11.01.005 or subsequent
(web upgrade to Sendmail 8.11.1 Version 5
or subsequent)
HP-UX B.11.00
=============
SMAIL-811.INETSVCS-SMAIL
fix: revision B.11.00.01.004 or subsequent
(web upgrade to Sendmail 8.11.1 Version 4
or subsequent)
--> END AFFECTED VERSIONS
HP Tru64 UNIX is not vulnerable to this reported problem.
B. Recommended solution
**REVISED 02**
-->HP-UX B.11.22 sendmail 8.11.1
PHNE_28409 is now available.
-->HP-UX B.11.00 and B.11.11 sendmail 8.11.1
A web upgrade is available from software.hp.com:
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. Please note that installing the patches
listed in the Security Patch Matrix will completely
implement a security bulletin _only_ if the MANUAL ACTIONS
field specifies "No."
The Security Patch Check tool can verify that a security
bulletin has been implemented on HP-UX 11.XX systems providing
that the fix is completely implemented in a patch with no
manual actions required. The Security Patch Check tool cannot
verify fixes implemented via a product upgrade.
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)
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.
-----------------------------------------------------------------
(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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UNIRAS wishes to acknowledge the contributions of Hewlett-Packard for the information
contained in this Briefing.
----------------------------------------------------------------------------------
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