CVE-2009-2055 Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service
Remote attackers can cause a denial of service via a malformed BGP UPDATE message, affecting Cisco IOS XR network devices.
- Exploited in the wild
- Since 25 Mar 2022
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2009-2055?
CVE-2009-2055 is a medium-severity denial of service vulnerability in Cisco Ios Xr, published on 19 Aug 2009. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Cisco IOS XR 3.4.0 through 3.8.1 allows remote attackers to cause a denial of service (session reset) via a BGP UPDATE message with an invalid attribute, as demonstrated in the wild on 17 August 2009.
Weakness: CWE-20
Which versions are affected by CVE-2009-2055?
It affects 1 product.
Products include Cisco Ios Xr.
How do I fix CVE-2009-2055?
No fix has been published for CVE-2009-2055 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 15 Apr 2022.
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-2009-2055 being exploited?
Yes. Attackers have exploited CVE-2009-2055 in the wild since at least 25 Mar 2022.
Other vulnerabilities in Cisco Ios Xr
- CVE-2020-3118 Cisco IOS XR Software Discovery Protocol Format String
- CVE-2020-3569 Cisco IOS XR Software DVMRP Memory Exhaustion
- CVE-2020-3566 Cisco IOS XR Software DVMRP Memory Exhaustion
- CVE-2010-3035 Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service
- CVE-2022-20821 Cisco IOS XR Open Port
Sources
Also known as GHSA-2j56-f322-jxrm.