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Arbitrary filepath traversal via URI injection

High severity GitHub Reviewed Published Nov 9, 2021 in cloudflare/cfrpki • Updated Jan 23, 2024

Package

gomod github.com/cloudflare/cfrpki (Go)

Affected versions

< 1.4.4

Patched versions

1.4.4

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.

Patches

For more information

If you have any questions or comments about this advisory email us at [email protected]

References

@dhaynespls dhaynespls published to cloudflare/cfrpki Nov 9, 2021
Reviewed Nov 10, 2021
Published to the GitHub Advisory Database Nov 10, 2021
Published by the National Vulnerability Database Nov 11, 2021
Last updated Jan 23, 2024

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H

EPSS score

7.185%
(94th percentile)

Weaknesses

CVE ID

CVE-2021-3907

GHSA ID

GHSA-cqh2-vc2f-q4fh

Source code

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