CVE-2021-3911: cloudflare octorpki Improper Input Validation
CVSS: 6.5v3.1MediumModified
AliasesUBUNTU-CVE-2021-3911DEBIAN-CVE-2021-3911GHSA-w6ww-fmfx-2x22GO-2022-0252
Published 11-11-2021Last modified 16-09-2024
Vulnerability summary
CVE-2021-3911 is a medium (CVSS 6.5) Improper Input Validation vulnerability in cloudflare octorpki. EPSS estimates a 0.91% chance of exploitation in the next 30 days, higher than 59.2% of scored vulnerabilities.
CVSS score
6.5/10
010
Medium · v3.1 (NVD)EPSS score
0.91%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 1Timeline
- 11-11-2021PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
If the ROA that a repository returns contains too many bits for the IP address then OctoRPKI will crash.
CVSS metrics
6 scores · 5 sources · 2 versionsMedium 6.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HSources5 sources · 4.2–6.5
- CVE.orgCNA4.2MediumCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:HDiffers
- OSV · UbuntuEcosystem advisory · calculated4.2MediumCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:HDiffers
- OSV · DebianEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · GoEcosystem advisory · calculated4.2MediumCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:HDiffers
Medium 4.3Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
0.91%
Chance of exploitation in the next 30 days
Percentile
59%
Versus all other CVEs
30-day change
0.00 pp
From 0.91% on 19-09-2026
19-09-202619-10-2026
EPSS score0.91%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
- CWE-252Unchecked Return ValueThe product does not check the return value from a method or function, which can prevent it from detecting unexpected states and conditions.
Affected systems
Debian2 products
- cfrpki< 1.4.0-1
- debian_linuxEOL11.0
Cloudflare1 product
- octorpki≥ unspecified, < 1.4.0 | < 1.3.0
Github.com/cloudflare1 product
- cfrpki< 1.4.0
Ubuntu1 product
- cfrpki< 1.4.2-1
4 vendors · 5 products
References
10 links- github.com/cloudflare/cfrpki/security/advisories/GHSA-w6ww-fmfx-2x22X Refsource MISCREPORTWEBThird Party Advisory
- github.com/cloudflare/cfrpkiPACKAGE