php security update (RHSA-2006-0567)

Original Release Date: August 25, 2006
Last Revised: October 10, 2008
Number: ASA-2006-179
Risk Level: Low
Advisory Version: 5.0
Advisory Status: Final

1. Overview:

PHP is a general purpose scripting language widely used in World Wide Web (WWW) pages and applications.

Due to a bug found in PHP's zend_hash_del() function, a remote attacker could possibly force PHP to bypass the variable initialization stage in PHP scripts using the unset() PHP function. If the "register_globals" setting was enabled for PHP by default, this would result in a security issue. However as Red Hat Enterprise Linux has this disabled by default, it is not susceptible out of the box. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2006-3017 to this issue.

PHP was found to contain a flaw in its tempnam() function. A remove attacker could potentially take advantage of the resulting directory traversal vulnerability and create files in arbitrary locations, bypassing the open_basedir parameter restrictions. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2006-1494 to this issue.

PHP's IMAP MIME header decoding function was found to contain a security vulnerability. If an attacker could construct a message with an abnormally long header, PHP could possibly crash while attempting to process it. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2002-2214 to this issue.

More information about these vulnerabilities can be found in the security advisory issued by RedHat Linux:

2. Avaya System Products with affected php configurations installed:

Product: Affected Version(s): Risk Level: Actions:
Avaya S87XX/S8500/S8300 CM 2.2 Load 126 and prior Low Upgrade to CM 2.2 Load 127 or later in the CM 2.2 series or CM 3.1 or later in the CM 3.x series to remove PHP.
Avaya Intuity LX IALX 1.x Low Upgrade to IALX 2.0 or later.
Avaya Messaging Storage Server MSS 1.x - 3.x Low Upgrade to MSS 3.1 or later.
Avaya Message Networking MN 1.x - 2.0 Low Upgrade to MN 3.1 or later.
Avaya CCS/SES SES 3.1.1 Low Upgrade to SES 3.1.2 or later.

Recommended Actions:
For all system products which use vulnerable versions of php, Avaya recommends that customers restrict local and network access to the server. This restriction should be enforced through the use of physical security, firewalls, ACLs, VPNs, and other generally-accepted networking practices until such time as an update becomes available and can be installed.

3. Avaya Software-Only Products

Avaya software-only products operate on general-purpose operating systems. Occasionally vulnerabilities may be discovered in the underlying operating system or applications that come with the operating system. These vulnerabilities often do not impact the software-only product directly but may threaten the integrity of the underlying platform.

In the case of this advisory Avaya software-only products are not affected by the vulnerability directly but the underlying Linux platform may be. Customers should determine on which Linux operating system the product was installed and then follow that vendors guidance:

4. Software-Only Products:

Product: Affected Version(s): Risk Level: Actions:
Avaya Interactive Response(IR) All None Depending on the Operating System provided by customers, the affected packages may be installed on the underlying Operating System supporting the IR application. The IR application does not require the software described in this advisory.
CVLAN All None Depending on the Operating System provided by customers, the affected packages may be installed on the underlying Operating System supporting the CVLAN application. The CVLAN application does not require the software described in this advisory.
Avaya Integrated Management Suite(IMS) All Low See recommended actions below.

Recommended Actions:
Avaya recommends that customers follow recommended actions supplied by the Operating System vendor (e.g. RedHat Linux) or remove the affected packages.

5. Additional Information:

Additional information may also be available via the Avaya support website and through your Avaya account representative. Please contact your Avaya product support representative, or dial 1-800-242-2121, with any questions.

6. Disclaimer:

ALL INFORMATION IS BELIEVED TO BE CORRECT AT THE TIME OF PUBLICATION AND IS PROVIDED "AS IS". AVAYA INC., ON BEHALF ITSELF AND ITS SUBSIDIARIES AND AFFILIATES (HEREINAFTER COLLECTIVELY REFERRED TO AS "AVAYA"), DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND FURTHERMORE, AVAYA MAKES NO REPRESENTATIONS OR WARRANTIES THAT THE STEPS RECOMMENDED WILL ELIMINATE SECURITY OR VIRUS THREATS TO CUSTOMERS' SYSTEMS. IN NO EVENT SHALL AVAYA BE LIABLE FOR ANY DAMAGES WHATSOEVER ARISING OUT OF OR IN CONNECTION WITH THE INFORMATION OR RECOMMENDED ACTIONS PROVIDED HEREIN, INCLUDING DIRECT, INDIRECT, CONSEQUENTIAL DAMAGES, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF AVAYA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

THE INFORMATION PROVIDED HERE DOES NOT AFFECT THE SUPPORT AGREEMENTS IN PLACE FOR AVAYA PRODUCTS. SUPPORT FOR AVAYA PRODUCTS CONTINUES TO BE EXECUTED AS PER EXISTING AGREEMENTS WITH AVAYA.

7. Revision History:

V 1.0 - August 25, 2006 - Initial Statement issued.
V 2.0 - September 1, 2006 - Updated Action for Avaya S87XX/S8500/S8300 Media Gateways.
V 3.0 - September 21, 2006 - Added CCS/SES impact after further review.
V 4.0 - November 22, 2006 - Updated Actions for Avaya S87XX/S8500/S8300 to indicate there is now a load available that removes PHP from CM 2.x systems.
V 5.0 - October 10, 2008 - Updated the Recommended Actions for Intuity LX, Message Storage Server, Message Networking and SES. Changed the Advisory Status to Final.

Send information regarding any discovered security problems with Avaya products to either the contact noted in the product's documentation or securityalerts@avaya.com.

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