CVE-2004-1109 describes a denial-of-service vulnerability in the FWDRV.SYS driver of Kerio Personal Firewall 4.1.1 and earlier versions. Remote attackers can exploit this by sending specially crafted TCP, UDP, or ICMP packets containing a zero-length IP Option field, leading to an infinite loop, high CPU consumption, and a system freeze. This vulnerability has a CVSS score of 5.0, indicating a medium severity, with a low attack complexity and no authentication required. While not actively exploited in the wild or on the CISA KEV catalog, public exploit code exists on ExploitDB, and it has garnered significant community discussion.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
4.0.6CPE matchmatch criteria | cpe:2.3:a:kerio:personal_firewall:4.0.6:*:*:*:*:*:*:* | ||
4.0.7CPE matchmatch criteria | cpe:2.3:a:kerio:personal_firewall:4.0.7:*:*:*:*:*:*:* | ||
4.0.8CPE matchmatch criteria | cpe:2.3:a:kerio:personal_firewall:4.0.8:*:*:*:*:*:*:* | ||
4.0.9CPE matchmatch criteria | cpe:2.3:a:kerio:personal_firewall:4.0.9:*:*:*:*:*:*:* | ||
4.0.10CPE matchmatch criteria | cpe:2.3:a:kerio:personal_firewall:4.0.10:*:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:P
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.