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AUSCERT External Security Bulletin Redistribution
ESB-2007.0263 -- [Cisco]
PHP HTML Entity Encoder Heap Overflow Vulnerability in
multiple Web-based Management Interfaces
26 April 2007
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Network Analysis Modules (NAM)
for 6000, 6500 and 7600 series switches/routers
CiscoWorks Wireless LAN Solution Engine (WLSE)
CiscoWorks Wireless LAN Solution Engine Express (WLSX)
Cisco Unified Application Environment
Cisco Hosting Solution
Publisher: Cisco Systems
Operating System: Cisco
Impact: Execute Arbitrary Code/Commands
Access: Existing Account
CVE Names: CVE-2006-5465
Ref: ESB-2006.0812
Original Bulletin:
http://www.cisco.com/warp/public/707/cisco-sr-20070425-http.shtml
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Cisco Security Response: PHP HTML Entity Encoder Heap Overflow
Vulnerability in multiple Web-based
Management Interfaces
http://www.cisco.com/warp/public/707/cisco-sr-20070425-http.shtml
Revision 1.0
For Public Release 2007 April 25 1600 UTC (GMT)
+---------------------------------------------------------------------
Cisco Response
==============
This is a response to a Hardened-PHP Project advisory posted on
November 3, 2006, entitled "PHP HTML Entity Encoder Heap Overflow
Vulnerability." This advisory is available at the following link:
http://www.hardened-php.net/advisory_132006.138.html.
Several Cisco devices leverage PHP HTML support and are affected by
the described vulnerability. The affected devices are listed below.
There are no workarounds for this vulnerability.
Additional mitigations that can be deployed on Cisco devices within
the network are available in the Cisco Applied Intelligence companion
document for this advisory at the following link:
http://www.cisco.com/warp/public/707/cisco-air-20070425-http.shtml.
This Cisco Security Response is posted at the following link:
http://www.cisco.com/warp/public/707/cisco-sr-20070425-http.shtml.
Additional Information
======================
The following products are affected by this vulnerability:
* Network Analysis Modules (NAM) for Cisco 6500 switch, Cisco 7600
router and Branch Routers
- Vulnerability is addressed via Cisco bug ID: CSCsg76978.
- There are three different models of NAM for the Catalyst 6000,
6500 series switches and Cisco 7600 series router; the
WS-SVC-NAM-1, WS-SVC-NAM-2 or WS-X6380-NAM . All three models
are affected by this vulnerability.
- Network Analysis Modules for Cisco Branch Routers (NM-NAM) are
affected.
- Access to the pages that contain PHP code requires previous
authentication.
- Devices running software versions 3.5(1a) and earlier are
potentially affected by this vulnerability.
Software Fixes
+-------------
- Software version 3.5(1b) and later contain fixed PHP code.
- Software version 3.6 and later contain fixed PHP code.
- There is no software fix for the WS-X6380-NAM.
- The software is available for download from:
http://www.cisco.com/kobayashi/sw-center/netmgmt/nam.shtml
* CiscoWorks Wireless LAN Solution Engine (WLSE) and CiscoWorks
Wireless LAN Solution Engine Express (WLSX)
- Vulnerability is being addressed via Cisco bug ID: CSCsg92199.
- There are no PHP pages that are reachable from a user session.
The WLSE/WLSX have a few PHP scripts that are run on the backend,
which are not exploitable.
Software Fixes
+-------------
- Currently no fixed version of WLSE/WLSX software exists.
- The version of PHP code within the WLSE/WLSX will be upgraded to
a fixed release via the above mentioned Cisco bug ID.
- This response will be updated once the DDTS is resolved.
* Cisco Unified Application Environment
- Vulnerability is addressed via Cisco bug ID: CSCsg92204.
- Access to the pages that contain the PHP code requires previous
authentication.
- Devices running software versions 2.3.x and earlier are
potentially affected by this vulnerability.
Software Fixes
+-------------
- Software version 2.4, due for release in May 2007, will contain
the fixed PHP code.
* Hosting Solution Engine/Hosting Solution Software
- Vulnerability is addressed via Cisco bug ID: CSCsg92193.
- All versions of software without the integrated patch installed
are affected by this vulnerability.
- Access to the pages that contain PHP code requires previous
authentication.
Software Fixes
+-------------
- A software patch was issued for Hosting Solution Engine and
Hosting Solution Software 1.9 on the 21st March 2007.
- The patch is called 'HSE-1.9u2.zip' and is available for download
from http://www.cisco.com/cgi-bin/tablebuild.pl/1105-host-sol
No other Cisco products are known to be affected by this
vulnerability.
Workarounds
===========
No workarounds exist for this vulnerability.
A best practice is to configure IP source restriction to valid source
IP addresses of administrative clients that may access the affected
devices. Administrators should restrict access to the web interface
to only trusted client IP addresses or subnets.
Additional mitigations that can be deployed on Cisco devices within
the network are available in the Cisco Applied Intelligence companion
document for this advisory at the following link:
http://www.cisco.com/warp/public/707/cisco-air-20070425-http.shtml
THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY
KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE
INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS
AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS
DOCUMENT AT ANY TIME.
Revision History
================
+-----------------------------------------------------------+
| Revision 1.0 | 2007-April-25 | Initial public release |
+-----------------------------------------------------------+
Cisco Security Procedures
=========================
Complete information on reporting security vulnerabilities in Cisco
products, obtaining assistance with security incidents, and
registering to receive security information from Cisco, is available
on Cisco's worldwide website at
http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html.
This includes instructions for press inquiries regarding Cisco
security notices. All Cisco security advisories are available at
http://www.cisco.com/go/psirt.
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