CVE-2021-23047

MEDIUM

F5 BIG-IP Access Policy Manager 11.6.1-11.6.4 - Uncontrolled Resource Consumption via OCSP AIA Verification

Title source: llm
STIX 2.1

Description

On version 16.x before 16.1.0, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.3, and all versions of 13.1.x, 12.1.x and 11.6.x, when BIG-IP APM performs Online Certificate Status Protocol (OCSP) verification of a certificate that contains Authority Information Access (AIA), undisclosed requests may cause an increase in memory use. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

References (1)

Core 1
Core References
Vendor Advisory x_refsource_misc
https://support.f5.com/csp/article/K79428827

Scores

CVSS v3 5.3
EPSS 0.0034
EPSS Percentile 56.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Details

CWE
CWE-400
Status published
Products (1)
f5/big-ip_access_policy_manager 11.6.1 - 11.6.5
Published Sep 14, 2021
Tracked Since Feb 18, 2026