Privilege escalation in F5 BIG-IP APM

Published: 2018-08-20

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2018-5547 CVE-2018-5546
CWE-ID	CWE-264
Exploitation vector	Local
Public exploit	N/A
Vulnerable software	BIG-IP APM Hardware solutions / Security hardware applicances
Vendor	F5 Networks

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Privilege escalation

EUVDB-ID: #VU14462

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-5547

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local attacker to gain elevated privileges on the target system.

The vulnerability exists due to F5 BIG-IP APM Client for Windows uses Legacy logon mode with a System account and displays a certificate user interface dialog box containing a link to the certificate policy. A local attacker can exploit the dialog box to gain administrator level privileges.

Mitigation

Update to version 7.1.7.1.

Vulnerable software versions

BIG-IP APM: 7.1.6 - 7.1.7

CPE2.3

External links

https://support.f5.com/csp/article/K10015187

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.

2) Privilege escalation

EUVDB-ID: #VU14463