CVE-2024-45238: An issue was discovered in Fort before 1.6.3

Q: How do I fix CVE-2024-45238?

fort validator: upgrade to 1.6.3. Exact commands for each OS are on this page.

Q: Is CVE-2024-45238 being exploited?

CVE-2024-45238 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-45238 affect?

CVE-2024-45238 affects fort validator. Severity is high (CVSS 7.5). 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 P

Q: How urgent is CVE-2024-45238?

Priority 37/100. High severity; Remotely exploitable, no login, no user action

Routine

HIGH 7.5REMOTEUPGRADE

CVE-2024-45238 is a high-severity flaw (CVSS 7.5) affecting fort validator. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 cras

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 77%)
CISA exploited list	No
Weakness	CWE-476
Published	2024-08-24
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: nicmx

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-08-24 23:15 UTCPublished CVE record published
2026-06-17 07:53 UTCUpdated Record last modified

nicmx fort validator UPGRADE

Affected: < 1.6.3

Fixed in: 1.6.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy fort-validator || rpm -q fort-validator || fort-validator --version

2. UPGRADE to 1.6.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade fort-validator

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade fort-validator

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-45238?

fort validator: upgrade to 1.6.3. Exact commands for each OS are on this page.

Is CVE-2024-45238 being exploited?

CVE-2024-45238 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-45238 affect?

CVE-2024-45238 affects fort validator. Severity is high (CVSS 7.5). 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 P

How urgent is CVE-2024-45238?

Priority 37/100. High severity; Remotely exploitable, no login, no user action

Software pages

OpenSSL vulnerabilities

Related CVEs

CVE-2024-56375 HIGH 7.5 DOWNGRADE An integer underflow was discovered in Fort 1.6.3 and 1.6.4 before 1.6.5
CVE-2024-56169 MEDIUM 5.3 UPGRADE A validation integrity issue was discovered in Fort through 1.6.4 before 2.0.0
CVE-2024-45235 HIGH 7.5 UPGRADE An issue was discovered in Fort before 1.6.3

References

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