#VU27873 Permissions, Privileges, and Access Controls in BIG-IP APM and APM Clients - CVE-2020-5896

Vulnerability identifier: #VU27873

Vulnerability risk: Low

CVSSv4.0: 4.4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-5896

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
BIG-IP APM
Hardware solutions / Security hardware applicances
APM Clients
Hardware solutions / Security hardware applicances

Vendor: F5 Networks

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to the BIG-IP Edge Client Windows Installer Service's temporary folder has weak file and folder permissions. A local user can execute signed .exe and MSI files and gain elevated privileges on the client Windows system.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

BIG-IP APM: 11.6.1 - 15.1.0

APM Clients: 7.1.5 - 7.1.9

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External links
https://support.f5.com/csp/article/K15478554

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.