PT-2021-15366 · F5 · Big-Ip

Published 2021-09-14 · Updated 2021-09-24 · CVE-2021-23042

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions BIG-IP versions 12.1.x through 12.1.5 BIG-IP versions 13.1.x through 13.1.3 BIG-IP versions 14.1.x through 14.1.3 BIG-IP versions 15.1.x through 15.1.2 BIG-IP versions 16.0.x through 16.0.1.1

Description When an HTTP profile is configured on a virtual server, undisclosed requests can cause a significant increase in system resource utilization.

Recommendations For BIG-IP versions 12.1.x through 12.1.5, update to version 12.1.6 or later. For BIG-IP versions 13.1.x through 13.1.3, update to version 13.1.4 or later. For BIG-IP versions 14.1.x through 14.1.3, update to version 14.1.4 or later. For BIG-IP versions 15.1.x through 15.1.2, update to version 15.1.3 or later. For BIG-IP versions 16.0.x through 16.0.1.1, update to version 16.0.1.2 or later.

Fix

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

CVE-2021-23042

Affected Products

Big-Ip

References · 5

• https://osv.dev/vulnerability/CVE-2021-23042 · Vendor Advisory
• https://support.f5.com/csp/article/K93231374 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-23042 · Security Note
• https://t.me/cvenotify/20845 · Telegram Post
• https://t.me/cibsecurity/28821 · Telegram Post