---
title: "Security digest: April 25, 2023"
url: https://erroneo.us/security/2023-04-25/
description: "April 25, 2023 vulnerability digest: 1 brief (SLP CVE-2023-29552: 2,200x Reflective DoS…). What to patch and who can relax."
type: security-digest-day
section: "Security Digest"
date_published: 2023-04-25
date_modified: 2026-10-23
publisher: erroneo.us
author: erroneo.us Security Desk
license: All rights reserved. Quote with attribution and a link.
---

# Security digest: April 25, 2023

1 editorial brief.

## Take stock

- Check exposure: SLP CVE-2023-29552: 2,200x Reflective DoS Amplification . Anyone with SLP reachable from the internet, typically end-of-support ESXi 6.5 or 6.7 hosts, printers, server management controllers or SUSE servers running slpd on public addresses.
- None of it touches your stack? Then there is nothing to do today. That is a result, not a failure to read carefully.

## Editorial briefs

- **Check exposure** [SLP CVE-2023-29552: 2,200x Reflective DoS Amplification](https://erroneo.us/security/briefs/slp-cve-2023-29552-reflective-dos-amplification/index.md): This is a protocol design flaw with no patch, and the harm falls mostly on third parties; confirm nothing on your public ranges answers on port 427, and treat any old ESXi host that does as a bigger problem than this CVE.

## Known exploited (CISA KEV)

None.

## Critical advisories

None.

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Source page: https://erroneo.us/security/2023-04-25/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt