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CVE-2024-45237

Nicmx Fort-validator buffer overflow

9.8 CRITICALEPSS 0.36%
  1. Published24 Aug 2024

Description

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Nicmx Fort-validator< 1.6.3

Remediation

Fixed in
Nicmx Fort-validator≥ 1.6.3

References

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Frequently asked

Is CVE-2024-45237 being actively exploited?

CVE-2024-45237 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.36%.

How severe is CVE-2024-45237?

CVE-2024-45237 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.36% probability of exploitation.

Which products are affected by CVE-2024-45237?

Affected products include Nicmx Fort-validator.

How do I fix CVE-2024-45237?

Upgrade affected software to a fixed version, for example Nicmx Fort-validator 1.6.3 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2024-45237 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.