UpHeron
All vulnerabilities

Servers and applications

CVE-2023-29552

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.

Actively exploited: CISA added it to its Known Exploited Vulnerabilities catalog on 8 Nov 2023.

Severity
High 7.5
Published
25 Apr 2023
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
7.0
Sources
NVD

Affected software

SoftwareAffected versions
VMware ESXiServers and applications · cpe:o:vmware:esxi
  • Every version before 7.0

Known exploited

CISA name
Service Location Protocol (SLP) Denial-of-Service Vulnerability
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.
Due for US agencies
29 Nov 2023
Used in ransomware
Not known

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2023-29552
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2023-29552