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Security Issue Alert

Cisco Unified Communications Manager CCMEncryption Hard-Coded Encryption Key Issue

 
Threat Type:CWE-310: Cryptographic Issues
IntelliShield ID:30040
Version:1
First Published:2013 July 17 16:16 GMT
Last Published:2013 July 17 16:16 GMT
Port: Not available
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Harassment
 
Version Summary:Cisco Unified Communications Manager contains an issue that could allow a local attacker to access sensitive information. Updates are not available.
 
 
Description
Cisco Unified Communications Manager (Unified CM) contains a hard-coded encryption key used for the encryption of sensitive data stored within the database, and securing computer telephony integration (CTI) communications.

The issue is due to the use of a static symmetric encryption key in all Cisco Unified CM versions. An attacker could exploit this issue by using the secret key to decrypt sensitive data including user credentials. An exploit could allow the attacker to decrypt sensitive system information such as user credentials gained when using other attacks.

Proof-of-concept code that demonstrates an exploit of this issue is publicly available.

Cisco has confirmed the issue in a security advisory; however, software updates are not yet available.
 
Patches/Software
The following products are affected:
  • Cisco Unified CM versions 9.1(2) and prior
  • Cisco Unified Presence Server/Cisco IM and Presence Service versions 9.1(2) and prior
Cisco has released a security advisory for bug IDs CSCsc69187 and CSCui01756 at the following link: cisco-sa-20130717-cucm. Software updates are not available.
 
Impact
A local attacker could exploit this issue to access sensitive information including user credentials that may be obtained via other attacks.
 
Safeguards
Administrators are advised to contact the vendor regarding future updates and releases.

The Cisco Applied Intelligence team has created the following companion document to guide administrators in identifying and mitigating attempts to exploit this issue prior to applying updated software: Identifying and Mitigating Exploitation of the Multiple Vulnerabilities in Cisco Unified Communications Manager

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

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

Administrators are advised to allow only privileged users to access administration or management 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.
 
Alert History
 
Initial Release


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

Primary Products:
CiscoCisco Unified Communications Manager 7.1 Base, (3), (5), (5b) | 8.5 Base | 9.0(1) Base | 9.1(1) Base
CiscoCisco Unified Presence Server 6.0 Base, .1, .2, .3, .4, .5, .6, .7 | 7.0 Base, .1, .2, .3, .4, .5, .6, .7, .8 | 8.0 .1, .2 | 8.5 .1, .2, .3, .4, .5 | 9.5 Base

Associated Products:
CiscoCisco Unified Presence Server 8.6 Base, .4 | 9.0 Base




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.
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