Kerio Personal Firewall (KPF) packet processing denial of service
| kerio-pf-packet-dos (17992) |  Low 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.
Platforms Affected:
- Kerio, Kerio Personal Firewall (KPF) prior to 4.1.2
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.
Consequences:
Denial of Service
References:
- Eeye Published Advisory AD20041109, Kerio Personal Firewall Multiple IP Options Denial of Service at http://www.eeye.com/html/research/advisories/AD20041109.html.
- Full-Disclosure Mailing List, Tue Nov 09 2004 - 12:38:13 CST, EEYE: Kerio Personal Firewall Multiple IP Options Denial of Service at http://archives.neohapsis.com/archives/fulldisclosure/2004-11/0270.html.
- Kerio Security Advisory KSEC-2004-11-04-01, Malicious packet can cause 100% utilization and freeze of the system. at http://www.kerio.com/security_advisory.html.
- Kerio Technologies Inc. Web site, Kerio Personal Firewall (KPF) System requirements at http://www.kerio.com/kpf_requirements.html.
- 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.
Reported:
Nov 08, 2004
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.
For corrections or additions please email xforce@iss.net