CVE-2023-29552
Service Location Protocol (SLP) Denial-of-Service Vulnerability
Published Apr 25, 2023 · updated Jun 16, 2026 · netapp smi-s provider
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.
Timeline
Detection, updates, and resolution for this record.
Apr 25, 2023 · Catalog
Detected
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.
Nov 8, 2023 · CISA KEV
Known exploited
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.
Nov 29, 2023 · CISA KEV
Remediation due
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.
Jun 16, 2026 · Catalog
Updated
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.
CISA due date Nov 29, 2023
Affected
- cpe netapp/smi-s providerversion unspecified
- cpe service location protocol project/service location protocolversion unspecified
- cpe suse/linux enterprise server11
- cpe suse/linux enterprise server12
- cpe suse/linux enterprise server15
- cpe suse/manager serverversion unspecified
- cpe vmware/esxiversion unspecified
- vendor IETF Service Location Protocol (SLP)version unspecified
Sources
- CISA KEVCVE-2023-29552
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.
cisa.gov - CVE.orgCVE-2023-29552
Official CVE identifier
cve.org - FIRST EPSSCVE-2023-29552
30-day exploitation probability 64.0%
first.org - NIST NVDCVE-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.
nvd.nist.gov