CVE-2023-29552

Service Location Protocol (SLP) Denial-of-Service

7.5 HIGHActively exploited (CISA KEV)Public exploitEPSS 64.0%

Published25 Apr 2023
Added to CISA KEV8 Nov 2023
Remediation due29 Nov 2023

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 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

ScopeUnchanged

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Affected products

Netapp Smi-s Providerall versions

Service Location Protocol Project Service Location Protocolall versions

Suse Manager Serverall versions

Suse Linux Enterprise Server11 · 12 · 15

VMware Esxi< 7.0

Remediation

Fixed in

VMware Esxi≥ 7.0

References

https://blogs.vmware.com/security/2023/04/vmware-response-to-cve-2023-29552-reflective-denial-of-service-dos-amplification-vulnerability-in-slp.htmlThird Party Advisory
https://curesec.com/blog/article/CVE-2023-29552-Service-Location-Protocol-Denial-of-Service-Amplification-Attack-212.htmlExploitThird Party Advisory
https://datatracker.ietf.org/doc/html/rfc2608Technical Description
https://github.com/curesec/slploadProduct
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-slpExploitThird Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-29552US Government Resource
https://www.cisa.gov/news-events/alerts/2023/04/25/abuse-service-location-protocol-may-lead-dos-attacksThird Party AdvisoryUS Government Resource
https://www.suse.com/support/kb/doc/?id=000021051Third Party Advisory

Frequently asked

Is CVE-2023-29552 being actively exploited?

Yes. CVE-2023-29552 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 8 Nov 2023.

How severe is CVE-2023-29552?

CVE-2023-29552 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 64.0% probability of exploitation.

Which products are affected by CVE-2023-29552?

Affected products include Netapp Smi-s Provider, Service Location Protocol Project Service Location Protocol, Suse Manager Server, Suse Linux Enterprise Server, VMware Esxi.

How do I fix CVE-2023-29552?

Upgrade affected software to a fixed version, for example VMware Esxi 7.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-29552 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.