Products & Services
Support

Product Categories


Popular Downloads


Manage Software

How to Buy

For Home

Linksys Products Store
Linksys is now part of Belkin
Products for everyone

All Ordering Options

Training & Events Partners
Guest

Vulnerability Alert

Cisco Unified IP Phone 8945 Crafted PNG Image Lockup Vulnerability

 
Threat Type:CWE-20: Input Validation
IntelliShield ID:30525
Version:1
First Published:2013 August 28 19:57 GMT
Last Published:2013 August 28 19:57 GMT
Port: Not available
CVE:CVE-2013-3468
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Mild Damage
CVSS Base:5.4 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:4.5
Related Resources:
View related Security Notice
 
 
Version Summary:Cisco Unified IP Phone 8945 contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service condition. Updates are available.
 
 
Description
A vulnerability in PNG image processing of the Cisco Unified IP Phone 8945 running software version 9.3(2) could allow an unauthenticated, remote attacker to cause the phone to lock up.

The vulnerability is due to incorrect processing of malformed PNG images. An attacker could exploit this vulnerability by placing a malicious PNG image on the HTTP Server from which the phone requests XML files. A successful exploit could allow the attacker to cause the phone to lock up.

Cisco has confirmed the vulnerability in a security notice and software updates are available.
 
Warning Indicators
At the time this alert was first published, Cisco Unified IP Phone 8945 running software version 9.3(2) is vulnerable. Later versions may also be vulnerable.
 
IntelliShield Analysis
To exploit this vulnerability, it is likely that an attacker would need access to trusted, internal networks and access to the HTTP server on the network that serves resources to an affected device. These access requirements limits the likelihood of a successful exploit.
 
Vendor Announcements
Cisco has released a security notice at the following link: CVE-2013-3468

Customers are advised to consult Cisco bug ID CSCud04270 for the most complete list of affected product versions.
 
Impact
An unauthenticated, remote attacker could exploit the vulnerability to cause an affected device to lock up and become unresponsive, resulting in a denial of service (DoS) condition.
 
Technical Information
The vulnerability is due to incorrect processing of malformed PNG images by an affected device.

An unauthenticated, remote attacker could exploit this vulnerability by placing a malicious PNG image on the HTTP Server from which an affected device requests XML files. A successful exploit could allow the attacker to cause the device to lock up, resulting in a DoS condition.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Administrators are advised to allow only trusted users to have network access.

Administrators are advised to monitor affected systems.
 
Patches/Software
Cisco customers with active contracts should contact their Cisco support team for assistance in upgrading to a software version that includes fixes for this vulnerability. Cisco customers without contracts may contact the Cisco Technical Assistance Center at 1-800-553-2447 or 1-408-526-7209 or via email at tac@cisco.com for assistance.
 
Alert History
 
Initial Release


Product Sets
 
The security vulnerability applies to the following combinations of products.

Primary Products:
CiscoCisco Unified IP Phone 8945 9.3 (2)

Associated Products:
N/A




Alerts and bulletins on the Cisco Security Intelligence Operations Portal are highlighted by analysts in the Cisco Threat Operations Center and represent a subset of the comprehensive content that is available through Cisco Security IntelliShield Alert Manager Service. This customizable threat and vulnerability alert service provides security staff with access to timely, accurate, and credible information about threats and vulnerabilities that may affect their environment.


LEGAL DISCLAIMER
The urgency and severity ratings of this alert are not tailored to individual users; users may value alerts differently based upon their network configurations and circumstances. THE ALERT, AND INFORMATION CONTAINED THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION CONTAINED THEREIN, OR MATERIALS LINKED FROM THE ALERT, IS AT YOUR OWN RISK. INFORMATION IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.
Powered by  IntelliShield