CVE-2021-3908 Infinite certificate chain depth results in OctoRPKI running forever

2021-11-1121:45:18

CWE-400

cloudflare

www.cve.org

cve-2021-3908

octorpki

certificate chain

CVSS3

5.9

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

8.1

Confidence

High

EPSS

0.001

Percentile

45.7%

JSON

OctoRPKI does not limit the depth of a certificate chain, allowing for a CA to create children in an ad-hoc fashion, thereby making tree traversal never end.

CNA Affected

[
  {
    "product": "octorpki",
    "vendor": "Cloudflare",
    "versions": [
      {
        "lessThan": "1.4.0",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]