VAR-200312-0440
Vulnerability from variot - Updated: 2024-02-06 22:46Kerio Personal Firewall (KPF) 2.1.4 has a default rule to accept incoming packets from DNS (UDP port 53), which allows remote attackers to bypass the firewall filters via packets with a source port of 53. Reportedly, KPF suffers from a vulnerability whereby the existing firewall filters may be bypassed. This vulnerability exists due to the fact that UDP traffic to and from port 53 is allowed. Allegedly, an attacker may craft a special packet with a source port of 53 and send this packet to a vulnerable system. KPF will allow this packet to proceed thus bypassing the firewall filters
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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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