Vulnerability Description
In FRRouting (FRR) before 10.3 from 6.0 onward, all routes are re-validated if the total size of an update received via RTR exceeds the internal socket's buffer size, default 4K on most OSes. An attacker can use this to trigger re-parsing of the RIB for FRR routers using RTR by causing more than this number of updates during an update interval (usually 30 minutes). Additionally, this effect regularly occurs organically. Furthermore, an attacker can use this to trigger route validation continuously. Given that routers with large full tables may need more than 30 minutes to fully re-validate the table, continuous issuance/withdrawal of large numbers of ROA may be used to impact the route handling performance of all FRR instances using RPKI globally. Additionally, the re-validation will cause heightened BMP traffic to ingestors. Fixed Versions: 10.0.3, 10.1.2, 10.2.1, >= 10.3.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://frrouting.org/security/cve-2024-55553/
- https://github.com/FRRouting/frr/pull/17586/commits/b0800bfdf04b4fcf48504737ebfe
- https://lists.debian.org/debian-lts-announce/2025/01/msg00023.html
FAQ
What is CVE-2024-55553?
CVE-2024-55553 is a vulnerability with a CVSS score of 7.5 (HIGH). In FRRouting (FRR) before 10.3 from 6.0 onward, all routes are re-validated if the total size of an update received via RTR exceeds the internal socket's buffer size, default 4K on most OSes. An attac...
How severe is CVE-2024-55553?
CVE-2024-55553 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-55553?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.