CVE-2005-3774 Denial of service in n/a
Remote attackers can cause denial of service on Cisco PIX firewalls by sending spoofed TCP packets that create invalid embryonic connections.
- 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-2005-3774?
CVE-2005-3774 is a medium-severity denial of service vulnerability in n/a, published on 23 Nov 2005. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Cisco PIX 6.3 and 7.0 allows remote attackers to cause a denial of service (blocked new connections) via spoofed TCP packets that cause the PIX to create embryonic connections that that would not produce a valid connection with the end system, including (1) SYN packets with invalid checksums, which do not result in a RST; or, from an external interface, (2) one byte of "meaningless data," or (3) a TTL that is one less than needed to reach the internal destination.
Which versions are affected by CVE-2005-3774?
It affects 1 product.
Products include Cisco Pix.
How do I fix CVE-2005-3774?
No fix has been published for CVE-2005-3774 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-2005-3774 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2005-3774 exists.
Public exploit code: 2 Exploit-DB entries.
Sources
Also known as GHSA-46r6-jr5x-j746.