CVE-2023-4809 describes a vulnerability in FreeBSD's pf packet filter, specifically when processing IPv6 packets with multiple fragment headers and a 'scrub fragment reassemble' rule. This flaw allows IPv6 fragments to bypass intended firewall rules, potentially leading to unauthorized forwarding or processing of traffic. The vulnerability has a CVSS score of 7.5 (High), indicating a network-based attack with low complexity and a high impact on integrity, but no impact on confidentiality or availability. There is currently no evidence of active exploitation, nor are there known public exploit codes or Metasploit modules available. Community discussion is minimal, with only one mention on Reddit.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 12.4CPE matchmatch criteria | cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:* | ||
>= 13.0, < 13.2CPE matchmatch criteria | cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:* | ||
12.4CPE matchmatch criteria | cpe:2.3:o:freebsd:freebsd:12.4:-:*:*:*:*:*:* | ||
12.4CPE matchmatch criteria | cpe:2.3:o:freebsd:freebsd:12.4:p1:*:*:*:*:*:* | ||
12.4CPE matchmatch criteria | cpe:2.3:o:freebsd:freebsd:12.4:p2:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.