What is CVE-2021-23047?

CVE-2021-23047 is a medium-severity vulnerability in F5 Big-Ip Access Policy Manager, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2021-09-14.

How severe is CVE-2021-23047?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Resource exhaustion in F5 Big-Ip Access Policy Manager

CVE-2021-23047

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.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.006 (45.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

F5 Big-ip_access_policy_manager
N/a Big-ip Apm — versions 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

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

f5sirt@f5.com (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-23047?: CVE-2021-23047 is a medium-severity vulnerability in F5 Big-Ip Access Policy Manager, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2021-09-14.
How severe is CVE-2021-23047?: Medium severity. CVSS v3 base score is 5.3 out of 10.