CVE-2021-3761

HIGH7.5EPSS 0.45%

OctoRPKI lacks contextual out-of-bounds check when validating RPKI ROA maxLength values

發布日:2021/9/7修改日:2026/3/13
也稱為:GHSA-c8xp-8mf3-62h9DSA-5041-1DEBIAN-CVE-2021-3761DEBIAN-CVE-2021-3907DEBIAN-CVE-2021-3908DEBIAN-CVE-2021-3909DEBIAN-CVE-2021-3910DEBIAN-CVE-2021-3911DEBIAN-CVE-2021-3912DEBIAN-CVE-2021-3978DEBIAN-CVE-2021-43173DEBIAN-CVE-2021-43174GO-2022-0246

描述

Any CA issuer in the RPKI can trick OctoRPKI prior to https://github.com/cloudflare/cfrpki/commit/a8db4e009ef217484598ba1fd1c595b54e0f6422 into emitting an invalid VRP "MaxLength" value, causing RTR sessions to terminate. ### Impact 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. ### Patches https://github.com/cloudflare/cfrpki/commit/a8db4e009ef217484598ba1fd1c595b54e0f6422 https://github.com/cloudflare/cfrpki/releases/tag/v1.3.0 ### For more information If you have any questions or comments about this advisory: * Email us at [[email protected]]([email protected])

受影響套件(4)

CVSS 分數

來源版本嚴重程度向量
osvCVSS 3.1HIGH7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

參考連結(9)