PT-2021-15372 · F5 · Big-Ip

Published 2021-09-14 · Updated 2021-09-24 · CVE-2021-23049

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 15.1.x through 15.1.2 BIG-IP versions 16.0.x through 16.0.1.1

Description When the iRules RESOLVER::summarize command is used on a virtual server, undisclosed requests can cause an increase in Traffic Management Microkernel (TMM) memory utilization, resulting in an out-of-memory condition and a denial-of-service (DoS).

Recommendations 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-2021-23049

Affected Products

Big-Ip

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2021-23049 · Security Note
• https://support.f5.com/csp/article/K65397301 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-23049 · Vendor Advisory
• https://t.me/cibsecurity/28808 · Telegram Post