Threats / IETF / CVE-2023-29552
CVE-2023-29552
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
IETF Service Location Protocol (SLP) vulnerability
Service Location Protocol (SLP) contains a denial-of-service vulnerability allowing unauthenticated remote attackers to register services and conduct amplified DoS attacks via spoofed UDP traffic.
Verdict
Today item — known-exploited.
An unauthenticated remote attacker can exploit SLP's service registration mechanism and UDP amplification properties to launch denial-of-service attacks against targeted systems without authentication requirements.
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Public proof-of-concept exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
3 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-11-08).
Probability (EPSS)
EPSS 0.65873 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: IETF, Service Location Protocol (SLP). Confirm exact fixed builds in the vendor advisory.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I register malicious services in the SLP directory using spoofed UDP packets to amplify my attack traffic.
Business
Service availability degrades as legitimate SLP queries are overwhelmed by amplified attack traffic, disrupting network operations.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I direct amplified responses toward victim infrastructure by exploiting SLP's UDP-based protocol design and lack of authentication controls.
Business
Network bandwidth is consumed by volumetric attacks, potentially affecting multiple services and customer connectivity.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05