CVE-2024-56375Network attack vector

Validation crash via empty manifest file list

Published Dec 22, 2024 · Updated Jan 6, 2025

Denial of service in FORT Validator 1.6.3 through 1.6.4 allows remote attackers to crash validation via a malicious RPKI manifest. In src/object/manifest.c, build_rpp subtracts one from an empty fileList count before shuffle validation, underflowing the loop bound and accessing the absent array indefinitely. The manifest must come from an RPKI repository beneath a trusted Trust Anchor; the resulting crash interrupts Route Origin Validation.

CVSS severity7.5
High
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in FORT Validator 1.6.3 through 1.6.4 allows remote attackers to crash validation via a malicious RPKI manifest. In src/object/manifest.c, build_rpp subtracts one from an empty fileList count before shuffle validation, underflowing the loop bound and accessing the absent array indefinitely. The manifest must come from an RPKI repository beneath a trusted Trust Anchor; the resulting crash interrupts Route Origin Validation.

The record

CVE
CVE-2024-56375
Published
Dec 22, 2024
Updated
Jan 6, 2025
Vendor
FORT Validator Project
Product
FORT Validator
Classifications
CWE-191, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 22, 2024CVE publishedPublication date reported by the CVE source.
  2. Jan 6, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.6.3 <1.6.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

FORT Validator Project · FORT Validatorversion=1.6.3 <1.6.5

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-191Integer Underflow (Wrap or Wraparound)
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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