CVE-2012-4620 Denial of service in n/a
Remote attackers can cause a denial of service on Cisco IOS routers with tunnel interfaces by sending specific tunneled packets.
- 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-2012-4620?
CVE-2012-4620 is a high-severity denial of service vulnerability in Cisco Ios, published on 27 Sep 2012. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Cisco IOS 12.2 and 15.0 through 15.2 on Cisco 10000 series routers, when a tunnel interface exists, allows remote attackers to cause a denial of service (interface queue wedge) via tunneled (1) GRE/IP, (2) IPIP, or (3) IPv6 in IPv4 packets, aka Bug ID CSCts66808.
Weakness: CWE-399
Which versions are affected by CVE-2012-4620?
It affects 2 products.
Products include Cisco 10008 Router, Cisco Ios.
How do I fix CVE-2012-4620?
No fix has been published for CVE-2012-4620 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-2012-4620 being exploited?
There is no known exploitation of CVE-2012-4620 in the wild and no public exploit code.
Other vulnerabilities in Cisco Ios
Sources
Also known as GHSA-cqqf-42xp-fqpj.