Known exploited vulnerability
CVE-2023-29552
The short answer
CVE-2023-29552 affects n/a n/a and is rated high (CVSS 7.5). CISA added it to the Known Exploited Vulnerabilities catalog on 2023-11-08: attackers are using it, so patch it first.
What it is
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
Exploited (CISA KEV)
Yes, since Nov 8, 2023
Federal due date Nov 29, 2023
EPSS, next 30 days
64%
Higher than 99% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
What CISA says to do
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.
Affected products
n/a. NVD's record lists the exact affected versions.
References
- blogs.vmware.com/security/2023/04/vmware-response-to-cve-2023-29552-reflective-denial-of-service-dos-amplification-vulnerability-in-slp.html Third Party Advisory
- curesec.com/blog/article/CVE-2023-29552-Service-Location-Protocol-Denial-of-Service-Amplification-Attack-212.html ExploitThird Party Advisory
- datatracker.ietf.org/doc/html/rfc2608 Technical Description
- github.com/curesec/slpload Product
- security.netapp.com/advisory/ntap-20230426-0001/ Third Party Advisory
- www.bitsight.com/blog/new-high-severity-vulnerability-cve-2023-29552-discovered-service-location-protocol-slp ExploitThird Party Advisory
- www.cisa.gov/news-events/alerts/2023/04/25/abuse-service-location-protocol-may-lead-dos-attacks Third Party AdvisoryUS Government Resource
- www.suse.com/support/kb/doc/?id=000021051 Third Party Advisory
- blogs.vmware.com/security/2023/04/vmware-response-to-cve-2023-29552-reflective-denial-of-service-dos-amplification-vulnerability-in-slp.html Third Party Advisory
- curesec.com/blog/article/CVE-2023-29552-Service-Location-Protocol-Denial-of-Service-Amplification-Attack-212.html ExploitThird Party Advisory
- datatracker.ietf.org/doc/html/rfc2608 Technical Description
- github.com/curesec/slpload Product
Questions
Is CVE-2023-29552 being exploited?
Yes. CISA added CVE-2023-29552 to its Known Exploited Vulnerabilities catalog on 2023-11-08, with a federal remediation due date of 2023-11-29.
How do I fix CVE-2023-29552?
CISA's 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.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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