CVEvulnerability
CVE-2023-29552
CISA Known Exploited Vulnerability
Service Location Protocol (SLP) Denial-of-Service Vulnerability — IETF Service Location Protocol (SLP)
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.
- Added to KEV
- 2023-11-08
- Remediation due
- 2023-11-29
- Ransomware use
- Unknown
- 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.
- Notes
- This vulnerability affects a common open-source component, third-party library, or a protocol used by different products. Please check with specific vendors for information on the patching status. For more information please see https://www.bitsight.com/blog/new-high-severity-vulnerability-cve-2023-29552-discovered-service-location-protocol-slp and https://www.cisa.gov/news-events/alerts/2023/04/25/abuse-service-location-protocol-may-lead-dos-attacks.; https://nvd.nist.gov/vuln/detail/CVE-2023-29552
- Status
- Analyzed
- Published
- 2023-04-25
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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.
Affected configurations
• netapp smi-s provider
• suse manager server
• suse linux enterprise server 11
• suse linux enterprise server 12
• suse linux enterprise server 15
• vmware esxi (< 7.0)
• service location protocol project service location protocol
References
- https://blogs.vmware.com/security/2023/04/vmware-response-to-cve-2023-29552-reflective-denial-of-service-dos-amplification-vulnerability-in-slp.html Third Party Advisory
- https://curesec.com/blog/article/CVE-2023-29552-Service-Location-Protocol-Denial-of-Service-Amplification-Attack-212.html Exploit, Third Party Advisory
- https://datatracker.ietf.org/doc/html/rfc2608 Technical Description
- https://github.com/curesec/slpload Product
- https://security.netapp.com/advisory/ntap-20230426-0001/ Third Party Advisory
- https://www.bitsight.com/blog/new-high-severity-vulnerability-cve-2023-29552-discovered-service-location-protocol-slp Exploit, Third Party Advisory
- https://www.cisa.gov/news-events/alerts/2023/04/25/abuse-service-location-protocol-may-lead-dos-attacks Third Party Advisory, US Government Resource
- https://www.suse.com/support/kb/doc/?id=000021051 Third Party Advisory
- https://blogs.vmware.com/security/2023/04/vmware-response-to-cve-2023-29552-reflective-denial-of-service-dos-amplification-vulnerability-in-slp.html Third Party Advisory
- https://curesec.com/blog/article/CVE-2023-29552-Service-Location-Protocol-Denial-of-Service-Amplification-Attack-212.html Exploit, Third Party Advisory
- https://datatracker.ietf.org/doc/html/rfc2608 Technical Description
- https://github.com/curesec/slpload Product
- https://security.netapp.com/advisory/ntap-20230426-0001/ Third Party Advisory
- https://www.bitsight.com/blog/new-high-severity-vulnerability-cve-2023-29552-discovered-service-location-protocol-slp Exploit, Third Party Advisory
- https://www.cisa.gov/news-events/alerts/2023/04/25/abuse-service-location-protocol-may-lead-dos-attacks Third Party Advisory, US Government Resource
- https://www.suse.com/support/kb/doc/?id=000021051 Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-29552 US Government Resource