CVE-2023-38406

ffr: Flowspec overflow in bgpd/bgp_flowspec.c

Published Nov 6, 2023 CVSS 3.1 · 9.8 Critical EPSS 1.1% KEV · Not listed
Description
bgpd/bgp_flowspec.c in FRRouting (FRR) before 8.4.3 mishandles an nlri length of zero, aka a "flowspec overflow."

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-3797-1 frr security update
Debian DLA Debian DLA DLA-3865-1 frr security update
Ubuntu USN Ubuntu USN USN-6498-1 FRR vulnerabilities
Ubuntu USN Ubuntu USN USN-6807-1 FRR vulnerabilities
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Nov 4, 2025, 4:10 PM
Reserved
Jul 17, 2023, 12:00 AM
Status
Modified
Published
Nov 6, 2023, 6:15 AM
Modified
Jun 17, 2026, 6:10 AM
Severity
Moderate
Public date
Feb 24, 2023, 12:00 AM