What is CVE-2021-23028?

CVE-2021-23028 is a high-severity vulnerability in F5 Big-Ip Advanced Web Application Firewall, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2021-09-14.

How severe is CVE-2021-23028?

High severity. CVSS v3 base score is 7.5 out of 10.

Improper input validation in F5 Big-Ip Advanced Web Application Firewall

CVE-2021-23028

On version 16.0.x before 16.0.1.2, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.2, and 13.1.x before 13.1.4, when JSON content profiles are configured for URLs as part of an F5 Advanced Web Application Firewall (WAF)/BIG-IP ASM security policy and applied to a virtual server, undisclosed requests may cause the BIG-IP ASM bd process to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.009 (57.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

F5 Big-ip_advanced_web_application_firewall — versions 16.0.1
F5 Big-ip_application_security_manager — versions 16.0.1
N/a Big-ip Advanced Waf And Asm — versions 16.0.x before 16.0.1.2, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.2, and 13.1.x before 13.1.4

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

f5sirt@f5.com (x_refsource_MISC, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2021-23028?: CVE-2021-23028 is a high-severity vulnerability in F5 Big-Ip Advanced Web Application Firewall, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2021-09-14.
How severe is CVE-2021-23028?: High severity. CVSS v3 base score is 7.5 out of 10.