CVE-2024-55553

frr: DoS via repeated RIB revalidation

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Published Jan 6, 2025 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4029-1 frr security update
EUVD EUVD EUVD-2024-52804 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.
Ubuntu USN Ubuntu USN USN-7230-2 FRR vulnerabilities
History
Type Values Removed Values Added
Metrics epss

{'score': 0.00161}

 epss

{'score': 0.0021}
Type Values Removed Values Added
Metrics epss

{'score': 0.0021}

 epss

{'score': 0.00161}
Type Values Removed Values Added
References
Type Values Removed Values Added
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. Affected Versions: FRRouting <6.0. Fixed Versions: 10.0.3, 10.1.2, 10.2.1, >= 10.3. 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.
Type Values Removed Values Added
Description In FRRouting (FRR) before 10.3, it is possible for an attacker to trigger repeated RIB revalidation by sending approximately 500 RPKI updates, potentially leading to prolonged revalidation times and a Denial of Service (DoS) scenario. 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. Affected Versions: FRRouting <6.0. Fixed Versions: 10.0.3, 10.1.2, 10.2.1, >= 10.3.
Type Values Removed Values Added
Title frr: DoS via repeated RIB revalidation
Weaknesses CWE-400
References
Metrics threat_severity

None

 threat_severity

Important
Type Values Removed Values Added
Weaknesses CWE-404
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}
Type Values Removed Values Added
Description In FRRouting (FRR) before 10.3, it is possible for an attacker to trigger repeated RIB revalidation by sending approximately 500 RPKI updates, potentially leading to prolonged revalidation times and a Denial of Service (DoS) scenario.
References
Earlier changes (3)

Subscriptions

No data.

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Jan 23, 2025, 6:03 PM
Reserved
Dec 8, 2024, 12:00 AM

View source JSON

Updated
Jan 23, 2025, 6:03 PM

JSON

Status
Deferred
Published
Jan 6, 2025, 11:15 PM
Modified
Jun 17, 2026, 8:11 AM

View source JSON

Severity
Important
Public date
Jan 6, 2025, 12:00 AM

View source Bugzilla JSON

No data.