CVE-2023-39916

Possible path traversal when storing RRDP responses

Published Sep 13, 2023 CVSS 3.1 · 9.3 Critical EPSS < 1% KEV · Not listed

Description

NLnet Labs’ Routinator 0.9.0 up to and including 0.12.1 as well as 0.14.0 up to and including 0.14.2 contains a possible path traversal vulnerability in the optional, off-by-default keep-rrdp-responses feature that allows users to store the content of responses received for RRDP requests. The location of these stored responses is constructed from the URL of the request. Due to insufficient sanitation of the URL, it is possible for an attacker to craft a URL that results in the response being stored outside of the directory specified for it.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

NLnet Labs

Routinator

unaffected

Version	Status	Constraints
`0.9.0`	affected	< 0.12.2
`0.14.*`	affected	—

Configuration 1 [-]

cpe:2.3:a:nlnetlabs:routinator:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

Vendor Solution

This issue is fixed in 0.15.0 which removes the rrdp-keep-responses feature. Disabling the rrdp-keep-responses option in affected versions also avoids the issue.

Tracking

Advisories

Source	ID	Title
EUVD	EUVD-2023-43614	NLnet Labs’ Routinator vulnerable to path traversal
Github GHSA	GHSA-5rxf-fqch-7vqp	NLnet Labs’ Routinator vulnerable to path traversal

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact None

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.643% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://nlnetlabs.nl/downloads/routinator/CVE-2023-39916.txt

History

Oct 3, 2025 10:00 AM Description updated View changes

Type	Values Removed	Values Added
Description	NLnet Labs’ Routinator 0.9.0 up to and including 0.12.1 contains a possible path traversal vulnerability in the optional, off-by-default keep-rrdp-responses feature that allows users to store the content of responses received for RRDP requests. The location of these stored responses is constructed from the URL of the request. Due to insufficient sanitation of the URL, it is possible for an attacker to craft a URL that results in the response being stored outside of the directory specified for it.	NLnet Labs’ Routinator 0.9.0 up to and including 0.12.1 as well as 0.14.0 up to and including 0.14.2 contains a possible path traversal vulnerability in the optional, off-by-default keep-rrdp-responses feature that allows users to store the content of responses received for RRDP requests. The location of these stored responses is constructed from the URL of the request. Due to insufficient sanitation of the URL, it is possible for an attacker to craft a URL that results in the response being stored outside of the directory specified for it.