CVE intelligence and bounded remediation

CVE-2022-48321 — Checkmk Checkmk security vulnerability

Medium CVSS 6.8

Limited Server-Side Request Forgery (SSRF) in agent-receiver in Tribe29's Checkmk <= 2.1.0p11 allows an attacker to communicate with local network restricted endpoints by use of the host registration API.

Severity
Medium
CVSS
6.8 (3.1)
Published
2023-02-20
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-20, CWE-918

Affected products

  • checkmk / checkmk / 2.1.0

Showing 1 representative product identities from 21 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Server-side request forgery and unintended proxying

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Check exposure

  • Inventory server-side URL fetchers, webhooks, importers, previews, redirects, proxies, and protocol handlers reachable from untrusted input.
  • Map egress paths to internal services, metadata endpoints, loopback, private address space, and privileged control planes.
  • Review DNS resolution, redirect, proxy, credential-forwarding, and URL parsing behavior without requesting sensitive targets.

Remediate safely

  • Replace arbitrary destinations with named integrations or a strict allowlist of schemes, hosts, ports, and paths.
  • Resolve and validate every destination and redirect hop, then enforce egress policy independently of application checks.
  • Remove ambient credentials and sensitive headers from fetchers; apply response size, time, and content limits.

Authoritative sources

Complete CVE record and remediation plan

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