Kerio Personal Firewall (KPF) packet processing denial of service
| kerio-pf-packet-dos (17992) |  Medium Risk |
Description:
Kerio Personal Firewall (KPF) is vulnerable to a denial of service attack when processing packets, caused by a vulnerability in the FWDRV.SYS component. A remote attacker could send a specially-crafted TCP, UDP, or ICMP packet, which would consume 100% of the available CPU resources on the system.
Consequences:
Denial of Service
Remedy:
Upgrade to the latest version of Kerio Personal Firewall (KPF) (4.1.2 or later), available from the Kerio Technologies, Inc. Web site. See References.
References:
- Eeye Published Advisory AD20041109: Kerio Personal Firewall Multiple IP Options Denial of Service.
- Full-Disclosure Mailing List, Tue Nov 09 2004 - 12:38:13 CST: EEYE: Kerio Personal Firewall Multiple IP Options Denial of Service.
- Kerio Security Advisory KSEC-2004-11-04-01: Malicious packet can cause 100% utilization and freeze of the system..
- Kerio Technologies Inc. Web site: Kerio Personal Firewall (KPF) System requirements.
- BID-11639: Kerio Personal Firewall IP Options Denial Of Service Vulnerability
- CVE-2004-1109: 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.
Platforms Affected:
- Kerio Kerio Personal Firewall (KPF) prior to 4.1.2
Reported:
Nov 08, 2004
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