CVE-2011-2581 Security feature bypass in n/a
Remote attackers can bypass access restrictions on Cisco Nexus switches by exploiting improper handling of ACL comments in deny statements.
- 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-2011-2581?
CVE-2011-2581 is a medium-severity vulnerability in Cisco Nx-Os, published on 14 Sep 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The ACL implementation in Cisco NX-OS 5.0(2) and 5.0(3) before 5.0(3)N2(1) on Nexus 5000 series switches, and NX-OS before 5.0(3)U1(2a) on Nexus 3000 series switches, does not properly handle comments in conjunction with deny statements, which allows remote attackers to bypass intended access restrictions in opportunistic circumstances by sending packets, aka Bug IDs CSCto09813 and CSCtr61490.
Weakness: CWE-264
Which versions are affected by CVE-2011-2581?
It affects 3 products.
Products include Cisco Nexus 3000, Cisco Nexus 5000, Cisco Nx-Os.
How do I fix CVE-2011-2581?
No fix has been published for CVE-2011-2581 yet. Limit exposure of the affected software until one is available.
Is CVE-2011-2581 being exploited?
There is no known exploitation of CVE-2011-2581 in the wild and no public exploit code.
Sources
Also known as GHSA-c76p-58cp-48fg.