CVE-2021-41531: Invalid RPKI data could disable Route Origin Validation on RTR clients.
NLnet Labs Routinator prior to 0.10.0 produces invalid RTR payload if an RPKI CA uses too large values in the max-length parameter in a ROA. This will lead to RTR clients such as routers to reject the RPKI data set, effectively disabling Route Origin Validation.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
NLnet Labs Routinatorto a version that resolves this vulnerability.Fixed in 0.10.0 - Compensating control
Ensure RTR clients (e.g., routers) are protected against invalid RPKI/RTR data by monitoring for RPKI/RVV disablement and restricting/isolating RTR data sources if invalid RTR payloads are detected.
Event History
Frequently Asked Questions
What is the vulnerability ID for NLnet Labs Routinator?
The vulnerability ID for NLnet Labs Routinator is CVE-2021-41531.
What is the severity of CVE-2021-41531?
The severity of CVE-2021-41531 is high with a CVSS score of 7.5.
What is affected by CVE-2021-41531?
NLnet Labs Routinator prior to version 0.10.0 is affected by CVE-2021-41531.
What is the impact of CVE-2021-41531?
CVE-2021-41531 can lead to the rejection of RPKI data sets by RTR clients, effectively disabling Route Origin Validation.
How can I fix CVE-2021-41531?
To fix CVE-2021-41531, you should update to version 0.10.0 or later of NLnet Labs Routinator.