Vulnerability identifier: #VU8984

Vulnerability risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-6157

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
BIG-IP WebSafe
Server applications / Server solutions for antivurus protection
BIG-IP PEM
Hardware solutions / Security hardware applicances
BIG-IP ASM
Hardware solutions / Security hardware applicances
BIG-IP APM
Hardware solutions / Security hardware applicances
BIG-IP AFM
Hardware solutions / Security hardware applicances
BIG-IP LTM
Hardware solutions / Security hardware applicances
BIG-IP Link Controller
Hardware solutions / Routers & switches, VoIP, GSM, etc
BIG-IP AAM
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: F5 Networks

Description
The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The weakness exists in the virtual servers with a configuration that uses the HTTP Explicit Proxy function and/or a SOCKS profile. A remote attacker can modify BIG-IP system configuration, extract sensitive system files, and/or possible execute arbitrary command on the BIG-IP system.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation
Install update from vendor's website.

Vulnerable software versions

BIG-IP WebSafe: 11.6.0 - 12.1.1

BIG-IP PEM: 11.5.1 HF6 - 12.1.1

BIG-IP Link Controller: 11.5.4 - 12.1.1

BIG-IP ASM: 11.5.4 - 12.1.1

BIG-IP APM: 11.5.4 - 12.1.1

BIG-IP AFM: 11.5.1 HF6 - 12.1.1

BIG-IP AAM: 11.5.0 - 12.1.1

BIG-IP LTM: 11.5.1 HF6 - 12.1.1

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External links
http://support.f5.com/csp/article/K02692210

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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