What’s Vulnerable › Vulnerabilities
CVE-2023-29552: Service Location Protocol (SLP) Denial-of-Service Vulnerability
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: yes — in CISA KEV since 2023-11-08
- EPSS: 64.0% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2023-04-25 · updated 2026-06-17
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 products
- NetApp Smi-S Provider: all versions
- Service Location Protocol Project Service Location Protocol: all versions
- SUSE Linux Enterprise Server: 11, 12; 15 (and their updates)
- SUSE Manager Server: all versions
- VMware ESXi: before 7.0 — fixed in 7.0
How to fix
Upgrade to a fixed version: VMware ESXi 7.0. Check the vendor advisory for mitigations.
References
- https://blogs.vmware.com/security/2023/04/vmware-response-to-cve-2023-29552-reflective-denial-of-service-dos-amplification-vulnerability-in-slp.html
- https://curesec.com/blog/article/CVE-2023-29552-Service-Location-Protocol-Denial-of-Service-Amplification-Attack-212.html
- https://datatracker.ietf.org/doc/html/rfc2608
- https://github.com/curesec/slpload
- https://security.netapp.com/advisory/ntap-20230426-0001/
- https://www.bitsight.com/blog/new-high-severity-vulnerability-cve-2023-29552-discovered-service-location-protocol-slp
- https://www.cisa.gov/news-events/alerts/2023/04/25/abuse-service-location-protocol-may-lead-dos-attacks
- https://www.suse.com/support/kb/doc/?id=000021051
- https://blogs.vmware.com/security/2023/04/vmware-response-to-cve-2023-29552-reflective-denial-of-service-dos-amplification-vulnerability-in-slp.html
- https://curesec.com/blog/article/CVE-2023-29552-Service-Location-Protocol-Denial-of-Service-Amplification-Attack-212.html
- https://datatracker.ietf.org/doc/html/rfc2608
- https://github.com/curesec/slpload
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