CVE-2009-2051: High severity cisco IOS vulnerability

Q: What is the severity of CVE-2009-2051?

CVE-2009-2051 is classified as a high severity vulnerability due to its potential to cause a denial of service.

Q: How do I fix CVE-2009-2051?

To fix CVE-2009-2051, update the affected Cisco IOS or Unified Communications Manager to a version that patches this vulnerability.

Q: What types of devices are affected by CVE-2009-2051?

CVE-2009-2051 affects several versions of Cisco IOS, Cisco IOS XE, and Cisco Unified Communications Manager.

Q: Can CVE-2009-2051 be exploited remotely?

Yes, CVE-2009-2051 can be exploited by remote attackers to trigger a device reload.

Q: What versions of Cisco IOS are impacted by CVE-2009-2051?

CVE-2009-2051 impacts Cisco IOS versions 12.2 through 12.4 and 15.0 through 15.1.

Published Aug 27, 2009

Updated

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.

Affected Software

6 affected components

cisco IOS>=12.2<=12.4

cisco Unified Communications Manager>=6.1\(1\)<6.1\(4\)

cisco Unified Communications Manager>=5.0<5.1\(3g\)

cisco Unified Communications Manager>=7.1<7.1\(2\)

Cisco IOS XE>=2.5.0<=2.6.1

cisco IOS>=15.0<=15.1

Remediation

Patch Available

http://www.cisco.com/en/US/products/products_security_advisory09186a0080af2d11.shtml

Event History

Aug 27, 2009

CVE Published

via MITRE·04:31 PM

Data Sourced

via MITRE·04:31 PM

Description

Frequently Asked Questions

What is the severity of CVE-2009-2051?

CVE-2009-2051 is classified as a high severity vulnerability due to its potential to cause a denial of service.

How do I fix CVE-2009-2051?