CVE-2020-16162
Missing validation checks on CRL presence or CRL staleness in the X509-based RPKI certificate-tree validation procedure allow remote attackers to bypass intended access restrictions by using revoked certificates.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.74%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered in RIPE NCC RPKI Validator 3.x through 3.1-2020.07.06.14.28. Missing validation checks on CRL presence or CRL staleness in the X509-based RPKI certificate-tree validation procedure allow remote attackers to bypass intended access restrictions by using revoked certificates. NOTE: there may be counterarguments related to backwards compatibility
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 0.74% probability · 53th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-295
- Affected
- ripe/rpki validator 3
- Source
- cve@mitre.org
References
- https://github.com/RIPE-NCC/rpki-validator-3/issues/162Third Party Advisory
- https://github.com/RIPE-NCC/rpki-validator-3/issues/232Third Party Advisory
- https://github.com/RIPE-NCC/rpki-validator-3/issues/162Third Party Advisory
- https://github.com/RIPE-NCC/rpki-validator-3/issues/232Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.