Awaiting Analysis
CVE has been marked for Analysis. Normally once in this state the CVE will be analyzed by NVD staff within 24 hours.
CVE has been marked for Analysis. Normally once in this state the CVE will be analyzed by NVD staff within 24 hours.
Products
FreeBSD
Source
secteam@freebsd.org
Tags
CVE-2024-6640 details
Published : Aug. 12, 2024, 1:38 p.m.
Last Modified : Aug. 12, 2024, 1:41 p.m.
Last Modified : Aug. 12, 2024, 1:41 p.m.
Description
In ICMPv6 Neighbor Discovery (ND), the ID is always 0. When pf is configured to allow ND and block incoming Echo Requests, a crafted Echo Request packet after a Neighbor Solicitation (NS) can trigger an Echo Reply. The packet has to come from the same host as the NS and have a zero as identifier to match the state created by the Neighbor Discovery and allow replies to be generated. ICMPv6 packets with identifier value of zero bypass firewall rules written on the assumption that the incoming packets are going to create a state in the state table.
CVSS Score
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
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Weakness
| Weakness | Name | Description |
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References
| URL | Source |
|---|---|
| https://security.freebsd.org/advisories/FreeBSD-SA-24:05.pf.asc | secteam@freebsd.org |
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