7.5

CVE-2021-3910: cloudflare octorpki Improper Input Validation

CVSS: 7.5v3.1HighAnalyzed
AliasesUBUNTU-CVE-2021-3910DEBIAN-CVE-2021-3910GHSA-5mxh-2qfv-4g7j
Published 11-11-2021Last modified 17-09-2024
Open JSON

Vulnerability summary

CVE-2021-3910 is a high (CVSS 7.5) Improper Input Validation vulnerability in cloudflare octorpki. EPSS estimates a 1.30% chance of exploitation in the next 30 days, higher than 69.9% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
1.30%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1
DSA-5041-1

Timeline

  1. 11-11-2021
    PublishedVulnerability first disclosed.
  2. 17-09-2024
    Last modifiedVulnerability information updated.

Description

OctoRPKI crashes when encountering a repository that returns an invalid ROA (just an encoded NUL (\0) character).

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

1.30%

Chance of exploitation in the next 30 days

Percentile

70%

Versus all other CVEs

30-day change

0.00 pp

From 1.30% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.30%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian2 products
Cloudflare1 product
  • octorpki≥ unspecified, < 1.4.0 | < 1.4.0
Github.com/cloudflare1 product
  • cfrpki< 1.4.0
Ubuntu1 product
  • cfrpki< 1.4.2-1

4 vendors · 5 products

References

10 links