CVE-2011-2393 Denial of service in n/a
Remote attackers can cause denial of service in BSD operating systems by flooding the IPv6 stack with Router Advertisement messages.
- 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-2011-2393?
CVE-2011-2393 is a high-severity denial of service vulnerability in Freebsd Freebsd, published on 2 Feb 2012. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Neighbor Discovery (ND) protocol implementation in the IPv6 stack in FreeBSD, NetBSD, and possibly other BSD-based operating systems allows remote attackers to cause a denial of service (CPU consumption and device hang) by sending many Router Advertisement (RA) messages with different source addresses, a similar vulnerability to CVE-2010-4670.
Weakness: CWE-399
Which versions are affected by CVE-2011-2393?
It affects 2 products.
Products include Freebsd Freebsd, Netbsd Netbsd.
How do I fix CVE-2011-2393?
No fix has been published for CVE-2011-2393 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-2011-2393 being exploited?
There is no known exploitation of CVE-2011-2393 in the wild and no public exploit code.
Other vulnerabilities in Freebsd Freebsd
Sources
Also known as GHSA-27vf-8fw5-36p7.