CVE-2005-4436 Denial of service in n/a
Remote attackers can cause a denial of service in Cisco IOS by sending spoofed EIGRP neighbor announcements with mismatched k values or goodbye 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-2005-4436?
CVE-2005-4436 is a high-severity denial of service vulnerability in n/a, published on 21 Dec 2005. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Extended Interior Gateway Routing Protocol (EIGRP) 1.2, as implemented in Cisco IOS after 12.3(2), 12.3(3)B, and 12.3(2)T and other products, allows remote attackers to cause a denial of service by sending a "spoofed neighbor announcement" with (1) mismatched k values or (2) "goodbye message" Type-Length-Value (TLV).
Which versions are affected by CVE-2005-4436?
How do I fix CVE-2005-4436?
No fix has been published for CVE-2005-4436 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-2005-4436 being exploited?
There is no known exploitation of CVE-2005-4436 in the wild and no public exploit code.
Sources
Also known as GHSA-4h7j-8cv2-jpwj.