[security bulletin] HPSBUX02702 SSRT100606 rev.4 - HP-UX Apache Web Server, Remote Denial of Service (DoS)

[security-alert@xxxxxx]

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SUPPORT COMMUNICATION - SECURITY BULLETIN

Document ID: c02997184
Version: 4

HPSBUX02702 SSRT100606 rev.4 - HP-UX Apache Web Server, Remote Denial of 
Service (DoS)

NOTICE: The information in this Security Bulletin should be acted upon as soon 
as possible.

Release Date: 2011-09-08
Last Updated: 2011-09-23

 -----------------------------------------------------------------------------

Potential Security Impact: Remote Denial of Service (DoS)

Source: Hewlett-Packard Company, HP Software Security Response Team

VULNERABILITY SUMMARY
Potential security vulnerabilities have been identified with HP-UX Apache Web 
Server. These vulnerabilities could be exploited remotely to create a Denial of 
Service (DoS).

References: CVE-2011-3192, CVE-2011-0419

SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.
HP-UX B.11.23, B.11.31 running HP-UX Apache Web Server Suite v3.17 containing 
Apache v2.2.15.07 or earlier
HP-UX B.11.11 running HP-UX Apache Web Server Suite v2.33 containing Apache 
v2.0.64.01 or earlier

BACKGROUND

CVSS 2.0 Base Metrics
===========================================================
  Reference              Base Vector             Base Score
CVE-2011-3192    (AV:N/AC:L/Au:N/C:N/I:N/A:C)       7.8
CVE-2011-0419    (AV:N/AC:M/Au:N/C:N/I:N/A:P)       4.3
===========================================================
             Information on CVSS is documented
            in HP Customer Notice: HPSN-2008-002

RESOLUTION

This bulletin will be revised when additional information becomes available.

HP has provided the following software updates to resolve these vulnerabilities.

HP-UX Web Server Suite (WSS) v3.18 containing Apache v2.2.15.08

The WSS v3.18 update is available for download from the following location
https://h20392.www2.hp.com/portal/swdepot/displayProductInfo.do?productNumber=HPUXWSATW318

HP-UX 11i Releases / Apache Depot name

B.11.23 & B.11.31 (32-bit) / HPUXWS22ATW-B318-32.depot

B.11.23 & B.11.31 (64-bit) / HPUXWS22ATW-B318-64.depot

HP-UX Web Server Suite (WSS) v2.33 containing Apache v2.0.64.01 and earlier

The WSS v2.33 preliminary update is available for download from the following 
location
ftp://srt10606:P2xg=AD5@xxxxxxxxxxxxxx or
https://ftp.usa.hp.com/hprc/home with
username srt10606 and password P2xg=AD5

NOTE: CVE-2011-0419 is not resolved in the WSS v2.33 depot below.

HP-UX 11i Release / Apache Depot name

B.11.11 / Apache-2.0-CVE-2011-3192-Fix-11.11.depot

B.11.23 (32 & 64-bit) / No longer supported. Upgrade to WSS v 3.18

B.11.31 (32 & 64-bit) / No longer supported. Upgrade to WSS v 3.18

Alternatives to Installing the WSS v2.33 Preliminary Patch
The Apache Software Foundation has documented a work around. For customers not 
wanting to install the WSS v2.33 preliminary patch, the following are 
recommended.

1) Use SetEnvIf or mod_rewrite to detect a large number of ranges and then 
either ignore the Range: header or reject the request.

2) Limit the size of the request field to a few hundred bytes.

3) Use mod_headers to completely disallow the use of Range headers.

Please refer to the Apache advisory for details. 
http://mail-archives.apache.org/mod_mbox/httpd-announce/201108.mbox/%3c20110826103531.998348F82@xxxxxxxxxxxxxxxxxxx%3e

MANUAL ACTIONS: Yes - Update
For B.11.23 and B.11.31 install HP-UX Web Server Suite v3.18 or subsequent.
For B.11.11 install HP-UX Web Server Suite v2.33 or subsequent.

PRODUCT SPECIFIC INFORMATION

HP-UX Software Assistant: HP-UX Software Assistant is an enhanced application 
that replaces HP-UX Security Patch Check. It analyzes all Security Bulletins 
issued by HP and lists recommended actions that may apply to a specific HP-UX 
system. It can also download patches and create a depot automatically. For more 
information see https://www.hp.com/go/swa

The following text is for use by the HP-UX Software Assistant.

AFFECTED VERSIONS

HP-UX Web Server Suite v3.18
HP-UX B.11.23
HP-UX B.11.31
==================
hpuxws22APCH32.APACHE
hpuxws22APCH32.APACHE2
hpuxws22APCH32.AUTH_LDAP
hpuxws22APCH32.AUTH_LDAP2
hpuxws22APCH32.MOD_JK
hpuxws22APCH32.MOD_JK2
hpuxws22APCH32.MOD_PERL
hpuxws22APCH32.MOD_PERL2
hpuxws22APCH32.PHP
hpuxws22APCH32.PHP2
hpuxws22APCH32.WEBPROXY
hpuxws22APCH32.WEBPROXY2
hpuxws22APACHE.APACHE
hpuxws22APACHE.APACHE2
hpuxws22APACHE.AUTH_LDAP
hpuxws22APACHE.AUTH_LDAP2
hpuxws22APACHE.MOD_JK
hpuxws22APACHE.MOD_JK2
hpuxws22APACHE.MOD_PERL
hpuxws22APACHE.MOD_PERL2
hpuxws22APACHE.PHP
hpuxws22APACHE.PHP2
hpuxws22APACHE.WEBPROXY
hpuxws22APACHE.WEBPROXY2
action: install revision B.2.2.15.08 or subsequent

HP-UX Web Server Suite v2.33
HP-UX B.11.11
==================
hpuxwsAPACHE.APACHE
hpuxwsAPACHE.APACHE2
hpuxwsAPACHE.AUTH_LDAP
hpuxwsAPACHE.AUTH_LDAP2
hpuxwsAPACHE.MOD_JK
hpuxwsAPACHE.MOD_JK2
hpuxwsAPACHE.MOD_PERL
hpuxwsAPACHE.MOD_PERL2
hpuxwsAPACHE.PHP
hpuxwsAPACHE.PHP2
hpuxwsAPACHE.WEBPROXY
action: install revision B.2.0.64.01 or subsequent

END AFFECTED VERSIONS

HISTORY
Version:1 (rev.1) - 8 September 2011 Initial release
Version:2 (rev.2) - 8 September 2011 Updated affectivity, recommendations, typos
Version:3 (rev.3) - 22 September 2011 New source for depots
Version:4 (rev.4) - 23 September 2011 Apache WSS 2.33 depot for B.11.11 
available

Third Party Security Patches: Third party security patches that are to be 
installed on systems running HP software products should be applied in 
accordance with the customer's patch management policy.

Support: For further information, contact normal HP Services support channel.

Report: To report a potential security vulnerability with any HP supported 
product, send Email to: security-alert@xxxxxx

Subscribe: To initiate a subscription to receive future HP Security Bulletin 
alerts via Email: 
http://h41183.www4.hp.com/signup_alerts.php?jumpid=hpsc_secbulletins

Security Bulletin List: A list of HP Security Bulletins, updated periodically, 
is contained in HP Security Notice HPSN-2011-001: 
https://h20566.www2.hp.com/portal/site/hpsc/public/kb/docDisplay/?docId=emr_na-c02964430

3C = 3COM
3P = 3rd Party Software
GN = HP General Software
HF = HP Hardware and Firmware
MP = MPE/iX
MU = Multi-Platform Software
NS = NonStop Servers
OV = OpenVMS
PI = Printing and Imaging
PV = ProCurve
ST = Storage Software
TU = Tru64 UNIX
UX = HP-UX

Copyright 2011 Hewlett-Packard Development Company, L.P.
Hewlett-Packard Company shall not be liable for technical or editorial errors 
or omissions contained herein. The information provided is provided "as is" 
without warranty of any kind. To the extent permitted by law, neither HP or its 
affiliates, subcontractors or suppliers will be liable for incidental,special 
or consequential damages including downtime cost; lost profits;damages relating 
to the procurement of substitute products or services; or damages for loss of 
data, or software restoration. 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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