CVE-2013-1121 Denial of service in n/a
Remote attackers can cause a device reload in Cisco NX-OS by sending crafted AS paths when complex regex is configured for inbound BGP routes.
- 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-2013-1121?
CVE-2013-1121 is a medium-severity denial of service vulnerability in Cisco Nx-Os, published on 19 Sep 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The regex engine in the BGP implementation in Cisco NX-OS, when a complex regular expression is configured for inbound routes, allows remote attackers to cause a denial of service (device reload) via a crafted AS path set, aka Bug ID CSCuf49554.
Weakness: CWE-399
Which versions are affected by CVE-2013-1121?
It affects 1 product.
Products include Cisco Nx-Os.
How do I fix CVE-2013-1121?
No fix has been published for CVE-2013-1121 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-2013-1121 being exploited?
There is no known exploitation of CVE-2013-1121 in the wild and no public exploit code.
Other vulnerabilities in Cisco Nx-Os
Sources
Also known as GHSA-fhpq-rxph-9fx4.