CVE-2005-4440 Security feature bypass in n/a
Remote attackers can bypass network segmentation and spoof VLAN traffic by sending double-tagged 802.1q frames, affecting network infrastructure security.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2005-4440?
CVE-2005-4440 is a medium-severity vulnerability in n/a, published on 21 Dec 2005. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The 802.1q VLAN protocol allows remote attackers to bypass network segmentation and spoof VLAN traffic via a message with two 802.1q tags, which causes the second tag to be redirected from a downstream switch after the first tag has been stripped, as demonstrated by Yersinia, aka "double-tagging VLAN jumping attack."
Which versions are affected by CVE-2005-4440?
It affects 1 product.
Products include Vlan Protocol Vlan Protocol.
How do I fix CVE-2005-4440?
No fix has been published for CVE-2005-4440 yet. Limit exposure of the affected software until one is available.
Is CVE-2005-4440 being exploited?
There is no known exploitation of CVE-2005-4440 in the wild and no public exploit code.
Sources
Also known as GHSA-9rvj-pj6p-4pj6.