Vulnerability Alert

Cisco ATA 187 Analog Telephone Adaptor Remote Access Vulnerability

 
Threat Type:CWE-264: Permissions, Privileges, and Access Control
IntelliShield ID:28010
Version:1
First Published:2013 February 06 16:32 GMT
Last Published:2013 February 06 16:32 GMT
Port: Not available
CVE:CVE-2013-1111
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Mild Damage
CVSS Base:9.0 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:7.4
 
Version Summary:Cisco ATA 187 Analog Telephone Adapter firmware versions 9.2.1.0 and 9.2.3.1 contain a vulnerability that could allow an unauthenticated, remote attacker to access the operating system of a targeted device. Updates are available.
 
 
Description
Cisco ATA 187 Analog Telephone Adaptor firmware versions 9.2.1.0 and 9.2.3.1 contain a vulnerability that could allow an unauthenticated, remote attacker to access the operating system of the affected device.

The vulnerability is due to improper validation of authentication on TCP port 7870 and improper authorization of commands within the operating system. An attacker could exploit this vulnerability by connecting to the affected system and sending arbitrary commands.

Cisco has confirmed the vulnerability in a security advisory and released software updates.
 
Warning Indicators
Cisco ATA 187 Analog Telephone Adaptor versions 9.2.1.0 and 9.2.3.1 are vulnerable.
 
IntelliShield Analysis
Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.
 
Vendor Announcements
Cisco has released a security advisory for bug ID CSCtz67038 at the following link: cisco-sa-20130206-ata187
 
Impact
A remote attacker could exploit the vulnerability to access sensitive information, create files, or cause a denial of service (DoS) condition for legitimate users.
 
Technical Information
The vulnerability exists because the affected software performs insufficient validation of user access credentials when handling Telnet connections to TCP port 7870.

A remote attacker could exploit the vulnerability by establishing an unauthenticated Telnet session on TCP port 7870 of a targeted device and issuing arbitrary commands to the operating system of a targeted device. The ability to issue arbitrary commands could allow the attacker to access sensitive information, create files, or cause a DoS condition for legitimate users.
 
Safeguards
The Cisco Applied Intelligence team has created the following companion document to guide administrators in identifying and mitigating attempts to exploit this vulnerability prior to applying updated software: Identifying and Mitigating Exploitation of the Cisco ATA 187 Analog Telephone Adaptor Remote Access Vulnerability

Administrators are advised to apply the appropriate updates.

Administrators may consider disabling remote Telnet access to affected devices.

Administrators are advised to monitor affected systems.
 
Patches/Software
Cisco customers with active contracts can obtain updates through the Software Center at the following link: Cisco. Cisco customers without contracts can obtain upgrades by contacting the Cisco Technical Assistance Center at 1-800-553-2447 or 1-408-526-7209 or via e-mail at tac@cisco.com.
 
Alert History
 
Initial Release


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

Primary Products:
CiscoCisco ATA 187 Analog Telephone Adaptor 9.2 .1.0, .3.1

Associated Products:
N/A




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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.
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