CVE-2023-29552 (GCVE-0-2023-29552)

Vulnerability from cvelistv5 – Published: 2023-04-25 00:00 – Updated: 2025-10-21 23:05
VLAI CISA Previdian
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: active Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-01-28 21:15 UTC
CWE
Assigner
References
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 7466e8f2-fc10-47dc-a41b-bb7716f65808

Vulnerability ID: CVE-2023-29552

Status: Confirmed

Status Updated: 2023-11-08 01:00 CET

Exploited: Yes

Timestamps
First Seen: 2023-11-08
Asserted: 2023-11-08
Scope
Notes: Service Location Protocol (SLP) Denial-of-Service Vulnerability | Affected: IETF / Service Location Protocol (SLP) | Description: 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. | Due date: 2023-11-29 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): 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
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes
Feed CISA Known Exploited Vulnerabilities Catalog
Product Service Location Protocol (SLP)
Due Date 2023-11-29
Date Added 2023-11-08
Vendorproject IETF
Vulnerabilityname Service Location Protocol (SLP) Denial-of-Service Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-10-02 08:09 CEST | Updated: 2026-10-02 08:09 CEST
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: ec7d5434-6bed-4487-b8df-28dffbaf36f9

Vulnerability ID: CVE-2023-29552

Status: Confirmed

Status Updated: 2023-11-08 01:00 CET

Exploited: Yes

Timestamps
First Seen: 2023-11-08
Asserted: 2023-11-08
Scope
Notes: The Service Location Protocol (SLP, RFC 2608) allows an unauthenticated, remote attacker to register arbitrary services. This could allow the... | Affected: VMware / Service Location Protocol (SLP) | CVSS: 7.5 (HIGH) | EPSS: 0.63975 | Used in malware: unknown | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian

Details
Feed Previdian (previdian.com)
Title The Service Location Protocol (SLP, RFC 2608) allows an unauthenticated, remote attacker to register arbitrary services. This could allow the...
Cve Id CVE-2023-29552
Vendor VMware
Ghsa Id None
Product Service Location Protocol (SLP)
Added Date 2023-11-08T00:00:00.000Z
Cvss Score 7.5
Epss Score 0.63975
Previous Ids
Cvss Severity HIGH
Virtual Patch False
Cvss Estimated False
Epss Percentile 0.99201
Used In Malware unknown
Vulnerability Id CVE-2023-29552
Ahead Of Cisa Kev None
Not Yet In Cisa Kev False
References
Created: 2026-10-02 09:11 CEST | Updated: 2026-10-02 09:11 CEST
Show details on NVD website
To clipboard 

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            ],
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                      },
                      {
                        "Automatable": "yes"
                      },
                      {
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                    "description": "CWE-noinfo Not enough information",
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                    "type": "CWE"
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          ],
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        "dateReserved": "2023-04-07T00:00:00.000Z",
        "dateUpdated": "2025-10-21T23:05:48.255Z",
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      "dataType": "CVE_RECORD",
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    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.