VAR-200501-0255
Vulnerability from variot - Updated: 2023-12-18 13:05The 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. A remote denial of service vulnerability affects the IP options filtering functionality of Kerio's Personal Firewall. This issue is caused by a failure of the application to properly handle malformed network packets. A remote attacker can exploit this issue anonymously with a spoofed packet to cause a computer running the affected application to hang indefinitely, denying service to legitimate users. Kerio Personal Firewall is a personal desktop firewall
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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