What is CVE-2024-45237?

CVE-2024-45237 is a critical-severity vulnerability in Nicmx Fort-Validator, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2024-08-24.

How severe is CVE-2024-45237?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2024-45237 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Nicmx Fort-Validator

CVE-2024-45237

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 Key Usage extension composed of more than two bytes of data. Fort writes this string into a 2-byte buffer without properly sanitizing its length, leading to a buffer overflow.

Vulnerability class: Buffer Overflow

EPSS: 0.004 (28.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Nicmx Fort-validator
N/a — versions n/a

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

Public proof-of-concept exploits

w4zu/Debian_

References

cve@mitre.org (Patch, Third Party Advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2024-45237?: CVE-2024-45237 is a critical-severity vulnerability in Nicmx Fort-Validator, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2024-08-24.
How severe is CVE-2024-45237?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2024-45237 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.