Cisco Unified Communications Manager sipSafeStrlen denial of service

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Cisco Unified Communications Manager. This impacts the function sipSafeStrlen. The manipulation results in denial of service. This vulnerability is cataloged as CVE-2009-2051. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as critical, was found in Cisco Unified Communications Manager (Unified Communication Software) (affected version not known). Affected is the function sipSafeStrlen. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. CVE summarizes:

Cisco IOS 12.2 through 12.4 and 15.0 through 15.1, Cisco IOS XE 2.5.x and 2.6.x before 2.6.1, and Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 4.x, 5.x before 5.1(3g), 6.x before 6.1(4), and 7.x before 7.1(2) allow remote attackers to cause a denial of service (device reload or voice-services outage) via a malformed SIP INVITE message that triggers an improper call to the sipSafeStrlen function, aka Bug IDs CSCsz40392 and CSCsz43987.

The weakness was shared 08/26/2009 (Website). The advisory is available at cisco.com. This vulnerability is traded as CVE-2009-2051. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 49648 (Cisco IOS Software Session Initiation Protocol Denial of Service Vulnerabilities (cisco-sa-20100922-sip)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO. The commercial vulnerability scanner Qualys is able to test this issue with plugin 43192 (Cisco IOS Software Session Initiation Protocol Denial of Service Vulnerabilities (cisco-sa-20100922-sip)).

A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (52814), Tenable (49648), SecurityFocus (BID 36152†), OSVDB (57453†) and Secunia (SA36499†). The entries VDB-49677, VDB-49676, VDB-49675 and VDB-49673 are related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.5

VulDB Base Score: 7.5
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 49648
Nessus Name: Cisco IOS Software Session Initiation Protocol Denial of Service Vulnerabilities (cisco-sa-20100922-sip)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/12/2009 🔍
08/18/2009 +67 days 🔍
08/26/2009 +8 days 🔍
08/26/2009 +0 days 🔍
08/26/2009 +0 days 🔍
08/27/2009 +0 days 🔍
08/28/2009 +1 days 🔍
09/01/2009 +3 days 🔍
09/22/2010 +386 days 🔍
03/18/2015 +1638 days 🔍
02/04/2025 +3611 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco.com
Status: Not defined

CVE: CVE-2009-2051 (🔍)
GCVE (CVE): GCVE-0-2009-2051
GCVE (VulDB): GCVE-100-49674
X-Force: 52814
SecurityFocus: 36152 - Cisco Unified Communications Manager Multiple Denial of Service Vulnerabilities
Secunia: 36499
OSVDB: 57453 - Cisco Unified Communications Manager SIP Trunk Malformed Packet Handling Remote DoS
SecurityTracker: 1022775
Vulnerability Center: 23341 - [cisco-sa-20090826-cucm] Cisco IOS and CUCM Remote DoS Vulnerability via a Malformed SIP INVITE, Medium

See also: 🔍

Entryinfo

Created: 03/18/2015 15:15
Updated: 02/04/2025 22:04
Changes: 03/18/2015 15:15 (61), 02/13/2017 10:34 (8), 08/20/2021 14:43 (3), 08/20/2021 14:46 (1), 07/27/2024 16:00 (16), 02/04/2025 22:04 (1)
Complete: 🔍
Cache ID: 216::103

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