Privilege escalation in procps-ng component in F5 BIG-IP

1) Privilege escalation

EUVDB-ID: #VU12975

Risk: Low

CVSSv3.1: 7.1 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2018-1122

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

Exploit availability: Yes

Description

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

The weakness exists due to top reads its configuration file from the current working directory, without any security check, if the HOME environment variable is unset or empty. A local attacker can exploit one of several vulnerabilities in top's config_file() function, execute top in /tmp (for example) and gain elevated privileges.

Mitigation

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

Vulnerable software versions

BIG-IP APM: 11.6.1 - 13.1.3.5

BIG-IP SSLO: 11.6.1 - 13.1.3.5

BIG-IP DDHD: 11.6.1 - 13.1.3.5

BIG-IP Advanced WAF: 11.6.1 - 13.1.3.5

BIG-IP PEM: 11.6.1 - 13.1.3.5

BIG-IP Link Controller: 11.6.1 - 13.1.3.5

BIG-IP GTM: 11.6.1 - 13.1.3.5

BIG-IP FPS: 11.6.1 - 13.1.3.5

BIG-IP DNS: 11.6.1 - 13.1.3.5

BIG-IP ASM: 11.6.1 - 13.1.3.5

BIG-IP Analytics: 11.6.1 - 13.1.3.5

BIG-IP AFM: 11.6.1 - 13.1.3.5

BIG-IP AAM: 11.6.1 - 13.1.3.5

BIG-IP LTM: 11.6.1 - 13.1.3.5

BIG-IP: 11.6.1 - 13.1.3.5

External links

http://support.f5.com/csp/article/K00409335

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.