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CVE-2021-3907

HIGH
Published 2021-11-11T21:45:16.585289Z
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CVSS Score

V3.1
7.4
/10
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.011
probability
of exploitation in the wild

There is a 1.1% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.775
Higher than 77.5% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
NONE
Integrity
HIGH
Availability
HIGH

Description

OctoRPKI does not escape a URI with a filename containing "..", this allows a repository to create a file, (ex. rsync://example.org/repo/../../etc/cron.daily/evil.roa), which would then be written to disk outside the base cache folder. This could allow for remote code execution on the host machine OctoRPKI is running on.

Understanding This Vulnerability

This Common Vulnerabilities and Exposures (CVE) entry provides detailed information about a security vulnerability that has been publicly disclosed. CVEs are standardized identifiers assigned by MITRE Corporation to track and catalog security vulnerabilities across software and hardware products.

The severity rating (HIGH) indicates the potential impact of this vulnerability based on the CVSS (Common Vulnerability Scoring System) framework. Higher severity ratings typically indicate vulnerabilities that could lead to more significant security breaches if exploited. Security teams should prioritize remediation efforts based on severity, exploit availability, and the EPSS (Exploit Prediction Scoring System) score, which predicts the likelihood of exploitation in the wild.

If this vulnerability affects products or systems in your infrastructure, we recommend reviewing the affected products section, checking for available patches or updates from vendors, and implementing recommended workarounds or solutions until a permanent fix is available. Organizations should also monitor security advisories and threat intelligence feeds for updates about active exploitation of this vulnerability.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

References

Solutions

Upgrade to 1.4.3

Credits & Acknowledgments

Koen van Hove

EU Vulnerability Database

Monitored by ENISA for EU cybersecurity

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

✓ GitHub Reviewed HIGH

Arbitrary filepath traversal via URI injection

GHSA-cqh2-vc2f-q4fh

Advisory Details

OctoRPKI does not escape a URI with a filename containing "..", this allows a repository to create a file, (ex. `rsync://example.org/repo/../../etc/cron.daily/evil.roa`), which would then be written to disk outside the base cache folder. This could allow for remote code execution on the host machine OctoRPKI is running on. ## Patches ## For more information If you have any questions or comments about this advisory email us at [email protected]

Affected Packages

Go github.com/cloudflare/cfrpki
ECOSYSTEM: ≥0 <1.4.4

CVSS Scoring

CVSS Score

7.5

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H

Advisory provided by GitHub Security Advisory Database. Published: November 10, 2021, Modified: November 10, 2021

References

Published: 2021-11-11T21:45:16.585289Z
Last Modified: 2024-09-17T03:18:30.852Z
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