CVE intelligence and bounded remediation

CVE-2020-13529 — An exploitable denial-of-service vulnerability exists in Systemd 245

Medium CVSS 6.1

An exploitable denial-of-service vulnerability exists in Systemd 245. A specially crafted DHCP FORCERENEW packet can cause a server running the DHCP client to be vulnerable to a DHCP ACK spoofing attack. An attacker can forge a pair of FORCERENEW and DCHP ACK packets to reconfigure the server.

Severity
Medium
CVSS
6.1 (3.1)
Published
2021-05-10
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-290

Affected products

  • systemd_project / systemd / 245
  • fedoraproject / fedora / 33
  • netapp / active_iq_unified_manager
  • netapp / cloud_backup

Matched remediation archetype

General vulnerability remediation

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Confirm the affected component, deployment paths, reachable interfaces, and enabled features from inventories and configuration, without probing production destructively.
  • Compare the advisory's affected conditions with the repository lockfiles, build manifests, artifacts, and runtime inventory.
  • Identify data sensitivity, trust boundaries, and privilege level for every confirmed affected deployment.

Remediate safely

  • Apply a vendor-supported fix or remove the affected component or feature; record the selected change and its source in the repository.
  • Update direct and transitive dependency locks, generated artifacts, deployment manifests, and asset inventories together.
  • Add a regression test for the documented unsafe condition using inert inputs and preserve rollback instructions.

Authoritative sources

Complete CVE record and remediation plan

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