Insecure DLL loading in APM Clients and BIG-IP APM - CVE-2021-22980
Published: February 11, 2021
Vulnerability identifier: #VU50613
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-22980
CWE-ID: CWE-427
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to the Client Troubleshooting Utility on Windows loads DLL libraries in an insecure manner. A remote attacker can place a specially crafted .dll file on a remote SMB fileshare, trick the victim into opening a file, associated with the vulnerable application, and execute arbitrary code on victim's system.
Affected software
APM Clients
BIG-IP APM
BIG-IP APM
How to mitigate CVE-2021-22980
Install updates from vendor's website.
APM Clients - addressed in versions 7.1.8.5, 7.2.1.1
BIG-IP APM - addressed in versions 13.1.3.6, 16.0.1.1
BIG-IP APM - addressed in versions 13.1.3.6, 16.0.1.1