An issue was discovered in Fort before 1.6.3.

published 2024-08-24 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-41379

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 23%
public exploits: 0; none known

An issue was discovered in Fort before 1.6.3. A malicious RPKI repository that descends from a (trusted) Trust Anchor can serve (via rsync or RRDP) a resource certificate containing a bit string that doesn't properly decode into a Subject Public Key. OpenSSL does not report this problem during parsing, and when compiled with OpenSSL libcrypto versions below 3, Fort recklessly dereferences the pointer. Because Fort is an RPKI Relying Party, a crash can lead to Route Origin Validation unavailability, which can lead to compromised routing.

Patch / fix

fixed in 1 distros 2

fort_validator_project fort_validator 1.6.3

debian ubuntu

fort-validator Debian 12 1.5.4-1+deb12u1
fort-validator Debian 14, Debian 13 1.6.3-1

debian advisories DEBIAN-CVE-2024-45238

fort-validator Ubuntu 22.04 LTS 1.5.3-1ubuntu0.1
fort-validator Ubuntu Pro 20.04 LTS 1.2.0-1ubuntu0.1~esm1
fort-validator Ubuntu Pro 24.04 LTS 1.6.1-1ubuntu0.1~esm2

ubuntu advisories UBUNTU-CVE-2024-45238

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 2 y ago (2024-08-26)

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

fort_validator_project fort_validator

Classification

Weakness

CWE-476 NULL Pointer Dereference

References

nicmx.github.io /FORT-validator/CVE.html
vendor-advisory
lists.debian.org /debian-lts-announce/2025/02/msg00030.html

Sources

CVE List CVE-2024-45238
NVD CVE-2024-45238

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary