Vulnerability identifier: #VU6527

Vulnerability risk: Low

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-9256

CWE-ID: CWE-362

Exploitation vector: Network

Exploit availability: No

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

Vendor: F5 Networks

Description
The vulnerability allows a remote authenticated user to gain elevated privileges on the target system.

The weakness exists due to race condition during the enforcement of permissions by the iControl component when permissions are assigned to a user and the role_map feature is not reloaded between the time permissions are changed and the user's next change request. A remote attacker can gain elevated privileges and conduct further attacks.

Successful exploitation of the vulnerability may result in access to the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

BIG-IP AAM:

BIG-IP AAM: 12.0.0 - 12.1.2

BIG-IP AFM: 12.0.0 - 12.1.2

BIG-IP Analytics: 12.0.0 - 12.1.2

BIG-IP APM: 12.0 HF1 - 12.1.2

BIG-IP ASM: 12.0.0 - 12.1.2

BIG-IP DNS: 12.0.0 - 12.1.2

BIG-IP Link Controller: 12.0.0 - 12.1.2

BIG-IP LTM: 12.0.0 - 12.1.2

BIG-IP PEM: 12.0.0 - 12.1.2

BIG-IP WebSafe: 12.0 - 12.1.2

---

External links
http://support.f5.com/csp/article/K47284724

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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