PT-2021-15318 · F5 · Big-Ip Apm

Published 2021-02-12 · Updated 2021-02-24 · CVE-2021-22985

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions BIG-IP APM versions 16.0.x through 16.0.1.1

Description The issue arises when processing VPN traffic with APM under certain conditions, causing TMM to consume excessive memory. A malicious, authenticated VPN user may exploit this to perform a Denial of Service (DoS) attack against the APM.

Recommendations For BIG-IP APM versions 16.0.x through 16.0.1.1, update to version 16.0.1.1 or later to resolve the issue. As a temporary workaround, consider restricting VPN access to trusted users and monitoring TMM memory usage to minimize the risk of exploitation.

Fix

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

CVE-2021-22985

Affected Products

Big-Ip Apm

References · 6

• https://osv.dev/vulnerability/CVE-2021-22985 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-22985 · Security Note
• https://support.f5.com/csp/article/K88162221 · Vendor Advisory
• https://t.me/cvenotify/10423 · Telegram Post
• https://t.me/cibsecurity/23547 · Telegram Post
• https://t.me/cvenotify/9896 · Telegram Post