November 8, 2023 · Applied Cybernetics Group
CVE-2023-29552 — IETF Service Location Protocol (SLP)
Service Location Protocol (SLP) Denial-of-Service Vulnerability
- Added to KEV
2023-11-08- Federal due date
2023-11-29- Vendor
- IETF
- Product
- Service Location Protocol (SLP)
- EPSS
- 99.2th percentile (score 0.659, as of
2026-07-13) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2023-29552
CISA short description
The Service Location Protocol (SLP) contains a denial-of-service (DoS) vulnerability that could allow an unauthenticated, remote attacker to register services and use spoofed UDP traffic to conduct a denial-of-service (DoS) attack with a significant amplification factor.
Required action
Apply mitigations per vendor instructions or disable SLP service or port 427/UDP on all systems running on untrusted networks, including those directly connected to the Internet.