CVE-2004-1109 Denial of service in n/a
Remote attackers can cause a system freeze and CPU exhaustion in Kerio Personal Firewall by sending packets with zero-length IP options.
- 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-2004-1109?
CVE-2004-1109 is a medium-severity denial of service vulnerability in n/a, published on 1 Dec 2004. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The FWDRV.SYS driver in Kerio Personal Firewall 4.1.1 and earlier allows remote attackers to cause a denial of service (CPU consumption and system freeze from infinite loop) via a (1) TCP, (2) UDP, or (3) ICMP packet with a zero length IP Option field.
Which versions are affected by CVE-2004-1109?
It affects 1 product.
Products include Kerio Personal Firewall.
How do I fix CVE-2004-1109?
No fix has been published for CVE-2004-1109 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-2004-1109 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2004-1109 exists.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in n/a
Sources
Also known as GHSA-vc3f-q7f5-f956.