Cisco Unified Communications Manager up to 8.5(1)su3 SIP Network Packet input validation
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
7.2 | $0-$5k | 0.00 |
A vulnerability classified as critical was found in Cisco Unified Communications Manager up to 8.5(1)su3 (Unified Communication Software). Affected by this vulnerability is an unknown code block of the component SIP. The manipulation as part of a Network Packet leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly. As an impact it is known to affect availability. The summary by CVE is:
The SIP implementation in Cisco Unified Communications Manager (CUCM) 6.x and 7.x before 7.1(5b)su5, 8.x before 8.5(1)su4, and 8.6 before 8.6(2a)su1; Cisco IOS 12.2 through 12.4 and 15.0 through 15.2; and Cisco IOS XE 3.3.xSG before 3.3.1SG, 3.4.xS, and 3.5.xS allows remote attackers to cause a denial of service (service crash or device reload) via a crafted SIP message containing an SDP session description, aka Bug IDs CSCtw66721, CSCtj33003, and CSCtw84664.
The weakness was released 09/26/2012 with Cisco as cisco-sa-20120926-cucm as confirmed advisory (Website). It is possible to read the advisory at tools.cisco.com. This vulnerability is known as CVE-2012-3949 since 07/10/2012. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.
The vulnerability scanner Nessus provides a plugin with the ID 67203 (Cisco Unified Communications Manager Session Initiation Protocol Denial of Service Vulnerability (cisco-sa-20120926-cucm)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO.
Upgrading to version 9 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.
The vulnerability is also documented in the vulnerability database at Tenable (67203).
Product
Type
Vendor
Name
Version
License
Support
- end of life (old version)
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
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CVSSv3
VulDB Meta Base Score: 7.5VulDB Meta Temp Score: 7.2
VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
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Exploiting
Class: Input validationCWE: CWE-20
ATT&CK: Unknown
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
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EPSS Percentile: 🔍
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Nessus ID: 67203
Nessus Name: Cisco Unified Communications Manager Session Initiation Protocol Denial of Service Vulnerability (cisco-sa-20120926-cucm)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
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Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
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Upgrade: Unified Communications Manager 9
Timeline
07/10/2012 🔍09/26/2012 🔍
09/26/2012 🔍
09/26/2012 🔍
09/26/2012 🔍
09/26/2012 🔍
09/27/2012 🔍
09/27/2012 🔍
09/28/2012 🔍
10/01/2012 🔍
07/08/2013 🔍
04/14/2021 🔍
Sources
Vendor: cisco.comAdvisory: cisco-sa-20120926-cucm
Organization: Cisco
Status: Confirmed
CVE: CVE-2012-3949 (🔍)
IAVM: 🔍
Vulnerability Center: 36266 - [cisco-sa-20120926-sip, cisco-sa-20120926-cucm] SIP Implementation in CUCM and IOS Remote DoS via a Crafted SIP Message, High
SecurityFocus: 55697 - Cisco IOS and Unified Communications Manager (CVE-2012-3949) Denial of Service Vulnerability
Secunia: 50774 - Cisco IOS / IOS XE SIP Denial of Service Vulnerability, Moderately Critical
OSVDB: 85816
Entry
Created: 10/01/2012 18:05Updated: 04/14/2021 15:03
Changes: 10/01/2012 18:05 (73), 04/17/2017 11:30 (9), 04/14/2021 15:03 (3)
Complete: 🔍
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