Octorpki
CVE-2021-3910
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V2 - Validation and Business Logic Input validation, allowlisting
|
| Impact | CVSS score of 4.4 (MEDIUM). Attack characteristics: network attack vector, high complexity, high privileges required, no user interaction not required. EPSS exploitation probability: 0.56%. |
| Exploit ScenarioDerived | This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system. |
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Alert meAnalysisAI
OctoRPKI crashes when encountering a repository that returns an invalid ROA (just an encoded NUL (\0) character). Rated medium severity (CVSS 4.4), this vulnerability is remotely exploitable.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in go
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Technical ContextAI · show details
This vulnerability is classified under CWE-20. OctoRPKI crashes when encountering a repository that returns an invalid ROA (just an encoded NUL (\0) character). Affected products include: Cloudflare Octorpki, Debian Debian Linux.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionCVE.org
OctoRPKI crashes when encountering a repository that returns an invalid ROA (just an encoded NUL (\0) character).
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
VulDB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Affected Products (CPE)CVE.org
OctoRPKI does not escape a URI with a filename containing "..", this allows a repository to create a file, (ex. Rated cr
When copying files with rsync, octorpki uses the "-a" flag 0, which forces rsync to copy binaries with the suid bit set
Attackers can create long chains of CAs that would lead to OctoRPKI exceeding its max iterations parameter. Rated high s
OctoRPKI does not limit the length of a connection, allowing for a slowloris DOS attack to take place which makes OctoRP
OctoRPKI does not limit the depth of a certificate chain, allowing for a CA to create children in an ad-hoc fashion, the
Any CA issuer in the RPKI can trick OctoRPKI prior to 1.3.0 into emitting an invalid VRP "MaxLength" value, causing RTR
OctoRPKI tries to load the entire contents of a repository in memory, and in the case of a GZIP bomb, unzip it in memory
If the ROA that a repository returns contains too many bits for the IP address then OctoRPKI will crash. Rated medium se
Exploit-DB