CVE-2023-29552
The Service Location Protocol (SLP, RFC 2608) allows an unauthenticated, remote attacker to register arbitrary services.
High
Known exploited
- Severity
- 7.5 / 10
- High · CVSS 3.1
- Exploit chance (EPSS)
- 63.98%
- Chance of exploitation in the next 30 days. Higher than 99.22% of scored vulnerabilities.
- Known exploited
- Yes
- In CISA's catalog since Nov 8, 2023
- Weakness
- NVD-CWE-noinfo
- Fix
- None yet
- No fixed version published
Exploited in the wild. Service Location Protocol (SLP) Denial-of-Service Vulnerability (IETF Service Location Protocol (SLP)). 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 U.S. federal agencies by Nov 29, 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.
How to fix
No fixed version has been published yet. Until one is, remove or replace the package, or turn off or isolate the affected feature. This page updates when a fix ships.
Severity breakdown
CVSS 3.1 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
References
Advisories
- blogs.vmware.com/security/2023/04/vmware-response-to-cve-2023-29552-reflective-denial…
- curesec.com/blog/article/CVE-2023-29552-Service-Location-Protocol-Denial-of-Serv…
- security.netapp.com/advisory/ntap-20230426-0001
- bitsight.com/blog/new-high-severity-vulnerability-cve-2023-29552-discovered-servi…
- cisa.gov/news-events/alerts/2023/04/25/abuse-service-location-protocol-may-le…
- suse.com/support/kb/doc
Other links
Timeline
- Published
- Added to CISA's Known Exploited Vulnerabilities catalog
- Remediation due for U.S. federal agencies
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-5849-834g-hvw5 pypdf has possible infinite loop when hitting EOF in standard xref table during trailer search | High | Same weakness, |
| GHSA-cggf-277g-3q54 pypdf has possible large memory usage when parsing page tree | High | Same weakness, |
| GHSA-mfr5-77xh-9j7h pypdf has possible infinite loop when cloning dictionaries | High | Same weakness, |
| GHSA-3g3m-2fjr-6pw4 Glob: AbortSignal cancellation bypass allows post-timeout filesystem traversal | Medium | Same weakness, |
| GHSA-42gh-23hr-vphw pypdf has possible long runtimes when retrieving page labels | High | Same weakness, |
| GHSA-4vqv-7265-gm2w pypdf has possible large memory usage for exceptions in strict mode | High | Same weakness, |
| GHSA-62m5-6wh8-28x7 pypdf has possible long runtimes/large memory usage for encrypted PDF files | High | Same weakness, |
| GHSA-2qm8-x737-gmw5 pyasn1 has quadratic CPU consumption in constructed BIT STRING decoding | High | Same weakness, |
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