CVE-2009-2051 Denial of service in n/a
Remote attackers can cause device reload or voice outage via malformed SIP messages in Cisco IOS and Unified Communications Manager.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2009-2051?
CVE-2009-2051 is a high-severity denial of service vulnerability in Cisco Ios, published on 27 Aug 2009. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2009-2051?
It affects 3 products.
Products include Cisco Ios, Cisco Ios Xe, Cisco Unified Communications Manager.
How do I fix CVE-2009-2051?
No fix has been published for CVE-2009-2051 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2009-2051 being exploited?
There is no known exploitation of CVE-2009-2051 in the wild and no public exploit code.
Other vulnerabilities in Cisco Ios
- CVE-2017-12240 Cisco IOS and IOS XE Software DHCP Remote Code Execution
- CVE-2017-3881 Cisco IOS and IOS XE Remote Code Execution
- CVE-2018-0167 Cisco IOS, XR, and XE Software Buffer Overflow
- CVE-2017-6736 Cisco IOS and IOS XE Software SNMP Remote Code Execution
- CVE-2017-6737 Cisco IOS and IOS XE Software SNMP Remote Code Execution
Sources
Also known as GHSA-mp73-2m32-64h6.