CVE-2009-2056 Denial of service in n/a
Remote authenticated users can crash Cisco IOS XR processes via crafted BGP UPDATE messages, causing denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2009-2056?
CVE-2009-2056 is a low-severity denial of service vulnerability in Cisco Ios Xr, published on 21 Aug 2009. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Cisco IOS XR 3.8.1 and earlier allows remote authenticated users to cause a denial of service (process crash) via vectors involving a BGP UPDATE message with many AS numbers prepended to the AS path.
Weakness: CWE-264
Which versions are affected by CVE-2009-2056?
It affects 1 product.
Products include Cisco Ios Xr.
How do I fix CVE-2009-2056?
No fix has been published for CVE-2009-2056 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-2009-2056 being exploited?
There is no known exploitation of CVE-2009-2056 in the wild and no public exploit code.
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-mc68-3chj-wmp4.