Vulnerability · Published Nov 11, 2021 · Assigned by cloudflare
CVE-2021-3910NUL character in ROA causes OctoRPKI to crash
Medium 4.4
In plain English
A medium-severity improper input validation in octorpki from Cloudflare. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 69% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)4.4Medium
Exploit odds (30 days)1.2%top 31.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
OctoRPKI crashes when encountering a repository that returns an invalid ROA (just an encoded NUL (\0) character).
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | cfrpki | 1.4.0-1 | DEBIAN-CVE-2021-3910 |
| Go | github.com/cloudflare/cfrpki | 1.4.0 | GHSA-5mxh-2qfv-4g7j |
| Go | github.com/cloudflare/cfrpki | 1.4.0 | GO-2022-0251 |
| Ubuntu:22.04:LTS | cfrpki | 1.4.2-1 | UBUNTU-CVE-2021-3910 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Cloudflare | octorpki | unspecified – before 1.4.0 |
Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/cloudflare/cfrpki/security/advisories/GHSA-5mxh-2qfv-4g7j x_refsource_MISC
- DSA-5041 vendor-advisory, x_refsource_DEBIAN