Vulnerability Alert

Cisco IOS Software Unified Communications Manager Express SCCP Packet Processing Denial of Service Vulnerability

 
Threat Type:CWE-399: Resource Management Errors
IntelliShield ID:20069
Version:1
First Published:2010 March 24 16:12 GMT
Last Published:2010 March 24 16:12 GMT
Port: 2000
CVE:CVE-2010-0585
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Mild Damage
CVSS Base:7.8 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:6.4
 
Version Summary:

Cisco IOS Software contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service condition.  Updates are available.

 
 
Description

Cisco IOS Software contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.

The vulnerability is due to errors in processing malformed Skinny Client Control Protocol (SCCP) network messages.  An unauthenticated, remote attacker could exploit this vulnerability by sending a malicious request to the targeted device.  Successful exploitation could allow the attacker to cause the device to reload, resulting in a DoS condition.

Cisco has confirmed the vulnerability in a security advisory and released updated software.

 
Warning Indicators

Cisco has published a list of affected Cisco IOS Software releases in the security advisory. The Vendor Announcements section of this alert contains a link to the advisory.

 
IntelliShield Analysis

To exploit this vulnerability, an attacker must be able to send a malicious request originating from a registered IP address to a targeted device.  If autoregistration is enabled, which is the default configuration, an attacker could register an IP address and use that address to send a malicious request.  The attacker may require access to internal networks to send a request to a device.

If an exploit is successful, the attacker could cause a targeted device to stop responding and automatically reload, resulting in a DoS condition.  The device would be unable to process network requests while it starts.  Repeated attacks could cause the device to continue to reload, resulting in an extended DoS condition as long as the requests continue.

 
Vendor Announcements

Cisco has released a security advisory for Cisco bug ID CSCsz48614 at the following link: cisco-sa-20100324-cucme

 
Impact

An unauthenticated, remote attacker could exploit this vulnerability to cause a device to reload, resulting in a DoS condition.

 
Technical Information

The vulnerability is due to errors in processing malformed SCCP network messages.  An unauthenticated, remote attacker could exploit this vulnerability by sending a malicious packet to a targeted device.  The device will process the packet only if its origin IP address is registered by the device.  When processed, the packet could cause the device to become unresponsive and reload, resulting in a DoS condition.

 
Safeguards

Administrators are advised to apply the available software updates.

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

Administrators are advised to implement an intrusion prevention system (IPS) or intrusion detection system (IDS) to help detect and prevent attacks that attempt to exploit this vulnerability.

Administrators are advised to monitor critical systems.

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: cisco-amb-20100324-voice

 
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.


Signatures
 
Cisco Intrusion Prevention System (IPS) 6.0
Signature IDSignature NameReleaseLatest Release Date
24781/0Cisco IOS Malformed SCCP VulnerabilityS4792010 Mar 24 
Cisco Small Business IPS
Signature IDSignature NameReleaseLatest Release Date
SBIPS2010-000146/Cisco IOS Malformed SCCP VulnerabilitySBIPS0000052010 Jun 17 
 
Alert History
 

Initial Release



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

Primary Products:
N/A

Associated Products:
CiscoIOS 12.1YD 12.1(5)YD, 12.1(5)YD2, 12.1(5)YD6 | 12.1YE 12.1(5)YE2, 12.1(5)YE5 | 12.1YI 12.1(5)YI1 | 12.2B 12.2(16)B1, 12.2(16)B3 | 12.2MC 12.2(15)MC1b, 12.2(15)MC1c | 12.2T 12.2(8)T0b, 12.2(8)T0d, 12.2(8)T3, 12.2(8)T8, 12.2(11)T10, 12.2(11)T5, 12.2(11)T8, 12.2(13)T10, 12.2(13)T2, 12.2(13)T5, 12.2(13)T8, 12.2(15)T10, 12.2(15)T12a, 12.2(15)T15, 12.2(15)T4c, 12.2(15)T4e | 12.2tpc 12.2(8)TPC10b | 12.2XB 12.2(2)XB11, 12.2(2)XB2, 12.2(2)XB5 | 12.2XG 12.2(2)XG1 | 12.2XM 12.2(4)XM3 | 12.2XT 12.2(2)XT2 | 12.2XZ 12.2(4)XZ1 | 12.2YA 12.2(4)YA6 | 12.2YC 12.2(2)YC1, 12.2(2)YC4 | 12.2YD 12.2(8)YD3 | 12.2YL 12.2(8)YL | 12.2YN 12.2(8)YN1 | 12.2YT 12.2(11)YT1 | 12.2YY 12.2(8)YY4 | 12.2ZB 12.2(8)ZB2, 12.2(8)ZB3, 12.2(8)ZB6, 12.2(8)ZB7 | 12.2ZH 12.2(13)ZH5 | 12.2ZJ 12.2(15)ZJ2 | 12.2ZK 12.2(15)ZK4 | 12.2ZP 12.2(13)ZP1 | 12.3 12.3(26) | 12.3B 12.3(3)B1, 12.3(5a)B3 | 12.3T 12.3(2)T1, 12.3(2)T2, 12.3(2)T9, 12.3(4)T12, 12.3(4)T2a, 12.3(4)T4, 12.3(4)T7, 12.3(4)T9, 12.3(7)T3, 12.3(8)T2, 12.3(8)T3, 12.3(8)T6, 12.3(8)T7, 12.3(8)T9, 12.3(11)T2a, 12.3(11)T5, 12.3(14)T4 | 12.3TPC 12.3(4)TPC11b | 12.3XA 12.3(2)XA4 | 12.3XD 12.3(4)XD1, 12.3(4)XD4 | 12.3XE 12.3(2)XE5 | 12.3XG 12.3(4)XG3 | 12.3XI 12.3(7)XI10a, 12.3(7)XI7 | 12.3XJ 12.3(7)XJ1, 12.3(7)XJ2 | 12.3XK 12.3(4)XK3 | 12.3XW 12.3(8)XW2 | 12.3XX 12.3(8)XX1 | 12.3XY 12.3(8)XY3 | 12.3YE 12.3(4)YE1 | 12.3YF 12.3(11)YF2 | 12.3YM 12.3(14)YM1, 12.3(14)YM12, 12.3(14)YM3, 12.3(14)YM4, 12.3(14)YM7 | 12.3YQ 12.3(14)YQ4, 12.3(14)YQ5, 12.3(14)YQ7 | 12.3YT 12.3(14)YT1 | 12.3YU 12.3(14)YU1 | 12.3YW 12.3(11)YW2 | 12.3YX 12.3(14)YX10, 12.3(14)YX8 | 12.4 12.4(3h), 12.4(3i), 12.4(3j), 12.4(18b), 12.4(18e), 12.4(19a), 12.4(23b) | 12.4M 12.4(21a)M1 | 12.4MR 12.4(16)MR1 | 12.4T 12.4(4)T8, 12.4(6)T11, 12.4(6)T4, 12.4(6)T5, 12.4(6)T5b, 12.4(6)T8, 12.4(9)T5, 12.4(11)T4, 12.4(15)T2, 12.4(15)T8, 12.4(15)T9, 12.4(20)T1, 12.4(20)T3, 12.4(22)T1, 12.4(22)T3 | 12.4XA 12.4(2)XA1 | 12.4XB 12.4(2)XB1, 12.4(2)XB11, 12.4(2)XB6, 12.4(2)XB7 | 12.4XC 12.4(4)XC1, 12.4(4)XC5 | 12.4XD 12.4(4)XD10, 12.4(4)XD4 | 12.4XE 12.4(6)XE3 | 12.4XJ 12.4(11)XJ1 | 12.4XL 12.4(15)XL1, 12.4(15)XL3 | 12.4XW 12.4(11)XW3, 12.4(11)XW7 | 12.4XY 12.4(15)XY4, 12.4(15)XY5 | 12.4XZ 12.4(15)XZ, 12.4(15)XZ2 | 12.4YA 12.4(20)YA3 | 12.4YB 12.4(22)YB




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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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