Certificate revocation failure in FreeBSD fetch

1) Improper Check for Certificate Revocation

EUVDB-ID: #VU99545

Risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-45289

CWE-ID: CWE-299 - Improper Check for Certificate Revocation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to an error in fetch(1) when handling certificate revocation file passed via the "--crl" option. The environment variable name used by fetch(1) to pass the filename to the library was incorrect, in effect ignoring the option. As a result, the library will still connect to a host presenting a certificate that was included into the revocation list.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FreeBSD: 13.3 - 14.1

CPE2.3

• cpe:2.3:o:freebsd_foundation:freebsd:13.3:*:*:*:*:*:*:*
• cpe:2.3:o:freebsd_foundation:freebsd:13.4:*:*:*:*:*:*:*
• cpe:2.3:o:freebsd_foundation:freebsd:14.0:*:*:*:*:*:*:*

External links

https://www.freebsd.org/security/advisories/FreeBSD-SA-24:19.fetch.asc

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.