CVE-2005-4437 Security feature bypass in n/a
Remote attackers can bypass EIGRP authentication to replay messages or cause denial of service via ARP storms on local networks.
- 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-2005-4437?
CVE-2005-4437 is a high-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
MD5 Neighbor Authentication in Extended Interior Gateway Routing Protocol (EIGRP) 1.2, as implemented in Cisco IOS 11.3 and later, does not include the Message Authentication Code (MAC) in the checksum, which allows remote attackers to sniff message hashes and (1) replay EIGRP HELLO messages or (2) cause a denial of service by sending a large number of spoofed EIGRP neighbor announcements, which results in an ARP storm on the local network.
Which versions are affected by CVE-2005-4437?
It affects 1 product.
Products include Extended Interior Gateway Routing Protocol Extended Interior Gateway Routing Protocol.
How do I fix CVE-2005-4437?
No fix has been published for CVE-2005-4437 yet. Limit exposure of the affected software until one is available.
Is CVE-2005-4437 being exploited?
There is no known exploitation of CVE-2005-4437 in the wild and no public exploit code.
Sources
Also known as GHSA-8fqx-vvx3-hvxm.