Description
Any CA issuer in the RPKI can trick OctoRPKI prior to 1.3.0 into emitting an invalid VRP "MaxLength" value, causing RTR sessions to terminate. An attacker can use this to disable RPKI Origin Validation in a victim network (for example AS 13335 - Cloudflare) prior to launching a BGP hijack which during normal operations would be rejected as "RPKI invalid". Additionally, in certain deployments RTR session flapping in and of itself also could cause BGP routing churn, causing availability issues.
References (2)
Core 2
Core References
Patch, Third Party Advisory x_refsource_misc
https://github.com/cloudflare/cfrpki/security/advisories/GHSA-c8xp-8mf3-62h9
Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2022/dsa-5041
Scores
CVSS v3
7.5
EPSS
0.0122
EPSS Percentile
64.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-787
Status
published
Products (3)
cloudflare/cfrpki
0 - 1.3.0Go
cloudflare/octorpki
< 1.3.0
debian/debian_linux
11.0
Published
Sep 09, 2021
Tracked Since
Feb 18, 2026