CVE-2021-3908: Infinite certificate chain depth results in OctoRPKI running forever
First published: Mon Nov 01 2021(Updated: )
OctoRPKI (github.com/cloudflare/cfrpki/cmd/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. ### For more information If you have any questions or comments about this advisory email us at security@cloudflare.com
Credit: cna@cloudflare.com cna@cloudflare.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cloudflare Octorpki | <1.3.0 | |
| Debian Debian Linux | =11.0 | |
| debian/cfrpki | 1.4.2-1~deb11u1 1.4.4-1 1.5.10-2 |
Remedy
Upgrade to 1.4
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Reference Links
- https://github.com/cloudflare/cfrpki/security/advisories/GHSA-g5gj-9ggf-9vmq
- https://nvd.nist.gov/vuln/detail/CVE-2021-3908
- https://github.com/cloudflare/cfrpki/releases/tag/v1.4.0
- https://www.debian.org/security/2022/dsa-5041
- https://github.com/advisories/GHSA-g5gj-9ggf-9vmq (Advisory)
- https://security-tracker.debian.org/tracker/CVE-2021-3908
Frequently Asked Questions
What is the severity of CVE-2021-3908?
The severity of CVE-2021-3908 is high with a CVSS score of 7.5.
How does CVE-2021-3908 affect OctoRPKI?
CVE-2021-3908 affects OctoRPKI by allowing a CA to create children in an ad-hoc fashion, causing tree traversal to never end.
Which versions of OctoRPKI are affected by CVE-2021-3908?
OctoRPKI versions up to and excluding 1.4.0 are affected by CVE-2021-3908.
How can I fix CVE-2021-3908 in OctoRPKI?
To fix CVE-2021-3908 in OctoRPKI, upgrade to version 1.4.0 or later.
Are there any additional resources for CVE-2021-3908?
Yes, you can find additional resources for CVE-2021-3908 at the following links: [GitHub Security Advisory](https://github.com/cloudflare/cfrpki/security/advisories/GHSA-g5gj-9ggf-9vmq) and [NVD](https://nvd.nist.gov/vuln/detail/CVE-2021-3908).
- collector/github-advisory-latest
- alias/GHSA-g5gj-9ggf-9vmq
- alias/CVE-2021-3908
- collector/github-advisory
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- package-manager/go
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- version/debian debian linux/11.0