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CVE-2009-2051

7.8 · HIGH

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…

Published Aug 27, 2009ciscoEPSS 3.44%

Overview

CVE-2009-2051 is a high-severity vulnerability affecting cisco unified_communications_manager. It was published on August 27, 2009 and has a CVSS 2.0 base score of 7.8 (HIGH).

This vulnerability has a CVSS 2.0 base score of 7.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories and patches from cisco. Update unified_communications_manager to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
ciscounified_communications_manager>= 5.0, < 5.1\(3g\)Affected
ciscoios12.2Affected
ciscoios_xe2.5.0Affected

References

Refosvdb.org/57453Refsecunia.com/advisories/36498Refsecunia.com/advisories/36499Refwww.cisco.com/en/US/products/products_security_advisory09186a0080af2d11.shtmlRefwww.cisco.com/en/US/products/products_security_advisory09186a0080b4a30f.shtmlRefwww.securityfocus.com/bid/36152Refwww.securitytracker.com/id?1022775Refosvdb.org/57453Refsecunia.com/advisories/36498Refsecunia.com/advisories/36499

How CyberStrike helps

Frequently asked questions

What is CVE-2009-2051?

CVE-2009-2051 is a high-severity vulnerability affecting cisco unified_communications_manager. It was published on August 27, 2009 and has a CVSS 2.0 base score of 7.8 (HIGH).

How severe is CVE-2009-2051?

This vulnerability has a CVSS 2.0 base score of 7.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2009-2051?

Check the references section for vendor advisories and patches from cisco. Update unified_communications_manager to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2009-2051?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2009-2051 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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