CVE-2023-29552

HIGH7.5

CISA KEV

Published 2023-04-25 · Updated 2026-06-17 · Source cve@mitre.org

Summary

CVE-2023-29552 is a high-severity (CVSS 7.5) vulnerability in IETF Service Location Protocol (SLP). CISA added it to the Known Exploited Vulnerabilities catalog on November 8, 2023, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by November 29, 2023. CISA does not currently list it as used in ransomware campaigns. IETF has 2 vulnerabilities in the KEV catalog, 0 of them linked to ransomware.

All 2 known-exploited IETF vulnerabilities →

Description

The Service Location Protocol (SLP, RFC 2608) allows an unauthenticated, remote attacker to register arbitrary services. This could allow the attacker to use spoofed UDP traffic to conduct a denial-of-service attack with a significant amplification factor.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA Known-Exploited Vulnerability

Product: IETF — Service Location Protocol (SLP)

Name: Service Location Protocol (SLP) Denial-of-Service Vulnerability

Date added: 2023-11-08 · Due: 2023-11-29

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.

References

View on NVD

More exploited IETF vulnerabilities

Most recently added to CISA KEV

CVE-2023-44487
HTTP/2 — HTTP/2 Rapid Reset Attack Vulnerability
added 2023-10-10

View all →

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