CVE intelligence and bounded remediation

CVE-2024-21782 — F5 Big-Ip Access Policy Manager security vulnerability

Medium CVSS 6.7

BIG-IP or BIG-IQ Resource Administrators and Certificate Managers who have access to the secure copy (scp) utility but do not have access to Advanced shell (bash) can execute arbitrary commands with a specially crafted command string. This vulnerability is due to an incomplete fix for CVE-2020-5873. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated

Severity
Medium
CVSS
6.7 (3.1)
Published
2024-02-14
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-78

Affected products

  • f5 / big-ip_access_policy_manager
  • f5 / big-ip_access_policy_manager / 17.1.0
  • f5 / big-iq_centralized_management
  • f5 / big-ip_advanced_firewall_manager
  • f5 / big-ip_advanced_firewall_manager / 17.1.0
  • f5 / big-ip_analytics

Showing 6 representative product identities from 34 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Command, code, expression, and template injection

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Check exposure

  • Trace untrusted values to process execution, interpreters, evaluators, template engines, dynamic imports, and administrative scripting features.
  • Determine whether the affected path is reachable across each trust boundary and which service account or host privilege it inherits.
  • Review configuration for optional execution features, unsafe compatibility modes, and shell invocation.

Remediate safely

  • Replace string-built commands or evaluated code with fixed operations and structured argument APIs that do not invoke a shell.
  • Use strict allowlists for operation identifiers and reject unexpected input before it reaches any interpreter.
  • Update the affected component and add inert regression tests covering metacharacters, encoding variants, and alternate request paths.

Authoritative sources

Complete CVE record and remediation plan

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