State Issues in FreeBSD - CVE-2024-6640
Published: August 8, 2024
Vulnerability identifier: #VU95542
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2024-6640
CWE-ID: CWE-371
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: FreeBSD Foundation
Affected software:
FreeBSD
FreeBSD
Detailed vulnerability description
The vulnerability allows a remote attacker to bypass pf rules.
The vulnerability exists due to improper handling of ICMPv6 packets with ID=0. If the firewall is configured to block incoming Echo requests, this rule can be bypass by sending an ICMPv6 packet with identifier value of zero.
How to mitigate CVE-2024-6640
Install updates from vendor's website.