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Vulnerability Alert

Cisco Firewall Services Module Command Authorization Vulnerability

 
Threat Type:CWE-264: Permissions, Privileges, and Access Control
IntelliShield ID:31097
Version:1
First Published:2013 October 09 16:14 GMT
Last Published:2013 October 09 16:14 GMT
Port: Not available
CVE:CVE-2013-5506
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Moderate Damage
CVSS Base:6.8 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:5.6
 
Version Summary:Cisco Firewall Services Module contains a vulnerability that could allow an attacker to take complete control of a device. Updates are available.
 
 
Description
A vulnerability in the authorization code of the Cisco Firewall Services Module (FWSM) could allow an authenticated but unprivileged, local attacker to delete, modify, or view the configuration of any other context of the affected system.

The vulnerability is due to insufficient authorization safeguards of certain administrative commands in a user context when the affected system is configured for multiple context mode. An attacker could exploit this vulnerability by executing certain commands in any of the user contexts of the affected system.

Cisco has confirmed the vulnerability in a security advisory and released software updates.
 
Warning Indicators
Cisco Firewall Services Module Software versions prior to 3.2(27) and 4.1(14) are affected.
 
IntelliShield Analysis
Only an attacker who could log in locally to the affected device could exploit the vulnerability, decreasing the potential source of attacks.
 
Vendor Announcements
Cisco has released a security advisory for Cisco bug ID CSCue46080 at the following link: cisco-sa-20131009-fwsm
 
Impact
A local user could exploit this vulnerability to gain complete control of a targeted device.
 
Technical Information
The vulnerability is due to improper authorization requirements on administrative commands.

A local attacker could exploit this vulnerability by running the affected administrative commands. Due to improper authorization checks, the attacker could execute the commands without having the proper privileges and affect the device configuration.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Administrators are advised to allow only trusted users to access local systems.

Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.

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 email at tac@cisco.com.
 
Alert History
 
Initial Release


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

Primary Products:
CiscoCisco Firewall Services Module (FWSM) 3.1 .8, .9, .10, .11, .12, .13, .14, .15, .16, .17, .18, .19, .20, .21 | 3.2 .4, .5, .6, .7, .8, .9, .10, .11, .12, .13, .14, .15, .16, .17, .18, .19, .20, .21, .22, .23, .24, .25, .26, .27 | 4.0 .1, .2, .3, .6, .7, .8, .10, .11, .12, .13, .14, .15, .16, .17 | 4.1 Base, .1, .2, .3, .4, .5, .6, .7, .8, .9, .10, .11, .12, .13, .14

Associated Products:
N/A




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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.
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