Vulnerability · Published Jan 6, 2025 · Assigned by mitre
CVE-2024-55553
High 7.5
In plain English
A high-severity security flaw in the frr package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 58% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | frr | no fix listed | DEBIAN-CVE-2024-55553 |
| Debian:13 | frr | 10.2.1-1 | DEBIAN-CVE-2024-55553 |
| Debian:14 | frr | 10.2.1-1 | DEBIAN-CVE-2024-55553 |
| Ubuntu:22.04:LTS | frr | 8.1-1ubuntu1.13 | USN-7230-2 |
| Ubuntu:22.04:LTS | frr | 8.1-1ubuntu1.17 | USN-7230-3 |
| Ubuntu:22.04:LTS | frr | 8.1-1ubuntu1.17 | UBUNTU-CVE-2024-55553 |
| Ubuntu:24.04:LTS | frr | 8.4.4-1.1ubuntu6.3 | USN-7230-2 |
| Ubuntu:24.04:LTS | frr | 8.4.4-1.1ubuntu6.8 | UBUNTU-CVE-2024-55553 |
| Ubuntu:24.04:LTS | frr | 8.4.4-1.1ubuntu6.8 | USN-7230-3 |
Affected products (as reported)
Weakness: CWE-404 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H