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Fort ValidatorApplication · Nicmx

CVE-2024-45234

HIGH · 7.5 CVSS v3.1 Published 2024-08-24
Fix available
A fix is available. Upgrade to 1.6.3 or later.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
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) an ROA or a Manifest containing a signedAttrs encoded in non-canonical form. This bypasses Fort's BER decoder, reaching a point in the code that panics when faced with data not encoded in DER. Because Fort is an RPKI Relying Party, a panic can lead to Route Origin Validation unavailability, which can lead to compromised routing.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

Fort RPKI validator before 1.6.3 has a vulnerability where its BER decoder passes through non-canonical BER-encoded signedAttrs in ROA or Manifest objects to downstream code that expects strictly DER-encoded data. When non-DER data reaches this code path, it panics, causing the validator to crash and making Route Origin Validation unavailable.

MitigationUpgrade Fort to version 1.6.3 or later, which contains a fix for the BER decoder to properly handle or reject non-canonical BER-encoded signedAttrs.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Fort ValidatorApplication
Affected:< 1.6.3

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Verify Fort Validator is installed
    Run 'fort --version' or 'fort-validator --version' command, or check for the binary in common installation paths like /usr/bin/fort, /usr/local/bin/fort-validator
    Affected if Fort Validator binary exists on the system
  2. Determine installed version
    Execute 'fort --version' and compare the output to the vulnerable range (versions before 1.6.3)
    Affected if Version number is less than 1.6.3
  3. Confirm RPKI validation is active
    Review Fort Validator configuration files and running process to verify it is performing Route Origin Validation by processing ROA and Manifest objects
    Affected if The validator is actively processing ROA or Manifest objects from RPKI repositories
  4. Check for crash logs
    Examine system logs (journalctl, /var/log/syslog, /var/log/messages) for recent Fort Validator panic or crash events related to signedAttrs decoding
    Affected if Recent crashes or panics are logged involving BER decoder or signedAttrs handling

A system is affected if Fort Validator version is below 1.6.3 and it is actively performing RPKI Route Origin Validation by processing ROA or Manifest objects, which could trigger the panic when non-canonical BER-encoded signedAttrs are encountered.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 1.6.3 or later
Fixed in 1.6.3
Interim mitigation

Upgrade Fort to version 1.6.3 or later, which contains a fix for the BER decoder to properly handle or reject non-canonical BER-encoded signedAttrs.

Recommended fix High confidence

Fort Validator 1.6.3

  1. 1. Identify the current Fort Validator version by running 'fort validator --version' or checking the package manager
  2. 2. Download Fort Validator version 1.6.3 or later from the official repository (https://github.com/NICmx/Fort)
  3. 3. For source compilation: Clone the repository, checkout version 1.6.3, and follow the build instructions in the README
  4. 4. For package managers: Update package lists and install the new version (e.g., 'apt update && apt install fort-validator' on Debian)
  5. 5. Verify the installation by running 'fort validator --version' and confirming it shows 1.6.3 or later
  6. 6. Restart the Fort Validator service to load the new version
  7. 7. Monitor logs to confirm the validator is operating normally without panics

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Fort Validator Scoped from the published advisory
  • Consultation2.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA3.0 h
19.0 hours of engineering $3,280
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,248.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-45234 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
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