What’s Vulnerable › Vulnerabilities

CVE-2021-3912: OctoRPKI crashes when processing GZIP bomb returned via malicious repository

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-11-11 · updated 2026-06-17
• Weakness: CWE-400

Description

OctoRPKI tries to load the entire contents of a repository in memory, and in the case of a GZIP bomb, unzip it in memory, making it possible to create a repository that makes OctoRPKI run out of memory (and thus crash).

Affected products

• Cloudflare octorpki: before 1.3.0 — fixed in 1.3.0
• Debian Linux: 11.0

How to fix

Upgrade to a fixed version: Cloudflare octorpki 1.3.0. Check the vendor advisory for mitigations.

References

• https://github.com/cloudflare/cfrpki/security/advisories/GHSA-g9wh-3vrx-r7hg
• https://www.debian.org/security/2022/dsa-5041
• https://github.com/cloudflare/cfrpki/security/advisories/GHSA-g9wh-3vrx-r7hg
• https://www.debian.org/security/2022/dsa-5041

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