Hewlett-Packard Company Information for VU#206537

Apache vulnerable to DoS



Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

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

Vendor References



Hash: SHA1

**REVISED 01**
Originally issued: 25 April 2003
Last Revised:  03 Sept. 2003
SSRT3534 Potential Security Vulnerabilities in Apache HTTP Server

(rev. 1)

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. A memory leak in Apache 2.0 through 2.0.44 potentially

allows remote attackers to cause a denial of service
(memory consumption).

More details are available at:

2. Apache httpd fails to close access and error logs when
it forks and execs cgi scripts.  This fix depends on
the APR library release 0.9.2 or later.

More details are available at:
<http://nagoya.apache.org/bugzilla/index.html>  BUG #17206

IMPACT:   Potential information leak and Denial of Service

PLATFORM: HP9000 Servers running HP-UX release 11.00, 11.11, and
11.22 with versions of the following products are
affected, and represented as:

product-name, version (product-tag/bundle-tag)

- hp apache-based web server, or earlier
(HPApache/B9416AA, HPApache/B9416BA)
This product includes Apache 2.0.43.

- hp-ux apache-based web server, v. or earlier
This product includes Apache 2.0.43.

SOLUTION: For HP-UX releases 11.00, 11.11 and 11.22 download new
HP Apache product from <http://www.software.hp.com/>:

For HPApache/B9416AA, HPApache/B9416BA and
hpuxwsAPACHE/hpuxwsApache download the following:

- hp-ux apache-based web server, v. or later
This product includes Apache 2.0.45.


**REVISED 01**

--->> NOTE: The IPv6 solution is now available.  Please refer to
--->> documentation and depot's available from software.hp.com
--->> Click on "internet ready and networking"
--->> and look for "hp-ux apache-based web server
--->> v. for ipv6 powered by apache, tomcat, webmin.

Install the product containing the fix.
For customers with HPApache/B9416AA or
HPApache/B9416BA installed, the fix requires
migration to hpuxwsAPACHE/hpuxwsApache and
removing the affected products from the system.

AVAILABILITY: Complete product bundles are available now on

** REVISED 01**
CHANGE SUMMARY:  Rev.01 Added updated IPv6 information

A. Background

The Common Vulnerabilities and Exposures project
<http://cve.mitre.org/> has identified potential vulnerabilities

in the Apache HTTP Server (CAN-2003-0132).  These affect the
following HP product numbers/versions on HP-UX releases 11.00,
11.11 and 11.22:

- hp apache-based web server, or earlier
(HPApache/B9416AA, HPApache/B9416BA)

- hp-ux apache-based web server, v. or earlier

B. Recommended solution
The Apache Software Foundation has released Apache 2.0.45 as
the best known version that fixes the problems identified in
the above mentioned issues.

For customers using HPApache/B9416AA, HPApache/B9416BA and
hpuxwsAPACHE/hpuxwsApache, HP has incorporated Apache 2.0.45
in the following product:
- hp-ux apache-based web server v. or later


**REIVSED 01**

--->> NOTE: The IPv6 solution is now available.  Please refer to
--->> documentation and depot's available from software.hp.com
--->> Click on "internet ready and networking"
--->> and look for "hp-ux apache-based web server
--->> v. for ipv6 powered by apache, tomcat, webmin.

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

HPApache  HP Apache-based Web Server
hpuxwsAPACHE  A.   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 Software Depot using the previously

mentioned links.
- Verify successful download by comparing the cksum with the

value specified on the installation web page.
- Use SD to swinstall the depot.
- For customers with HPApache/B9416AA or 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"

To find the files containing HOME variables in the
/etc/rc.config.d directory:

%ls /etc/rc.config.d | grep apache

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.  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:

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 8.0


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