Insecure DLL loading in APM Clients and BIG-IP APM - CVE-2021-22980
Published: February 11, 2021
Vulnerability identifier: #VU50613
CSH Severity: High
CVSS v4.0: 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/E:U/U:Amber
CVE-ID: CVE-2021-22980
CWE-ID: CWE-427
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: F5 Networks
Affected software:
APM Clients
BIG-IP APM
APM Clients
BIG-IP APM
Detailed vulnerability description
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.
How to mitigate CVE-2021-22980
Install updates from vendor's website.