Vulnerability identifier: #VU12331

Vulnerability risk: Low

CVSSv3.1: 6.4 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-5518

CWE-ID: CWE-284

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
BIG-IP LTM
Hardware solutions / Security hardware applicances
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 GTM
Hardware solutions / Security hardware applicances
BIG-IP PEM
Hardware solutions / Security hardware applicances
BIG-IP AAM
Hardware solutions / Routers & switches, VoIP, GSM, etc
BIG-IP DNS
Hardware solutions / Routers & switches, VoIP, GSM, etc
BIG-IP Edge Gateway
Hardware solutions / Routers & switches, VoIP, GSM, etc
BIG-IP Link Controller
Hardware solutions / Routers & switches, VoIP, GSM, etc
BIG-IP WebAccelerator
Hardware solutions / Routers & switches, VoIP, GSM, etc
BIG-IP WebSafe
Server applications / Server solutions for antivurus protection

Vendor: F5 Networks

Description
The vulnerability allows an adjacent attacker to cause DoS condition on the target system.

The weakness exists in the vcmpd process due to improper access control. An adjacent attacker can cause the service to crash.

Mitigation
Update to version 12.1.3.4 or 13.1.0.6.

Vulnerable software versions

BIG-IP LTM: 12.0.0 - 13.1.0

BIG-IP AAM: 12.0.0 - 13.1.0

BIG-IP AFM: 12.0.0 - 13.1.0

BIG-IP Analytics: 12.0.0 - 13.1.0

BIG-IP APM: 12.0 HF1 - 13.1.0

BIG-IP ASM: 12.0.0 - 13.1.0

BIG-IP DNS: 12.0.0 - 13.1.0

BIG-IP Edge Gateway: 12.0.0 - 13.1.0

BIG-IP GTM: 12.0.0 - 13.1.0

BIG-IP Link Controller: 12.0.0 - 13.1.0

BIG-IP PEM: 12.0.0 - 13.1.0

BIG-IP WebAccelerator: 12.0.0 - 13.1.0

BIG-IP WebSafe: 12.0.0 - 13.1.0

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External links
http://support.f5.com/csp/article/K03165684

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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 local network (LAN).

Is there known malware, which exploits this vulnerability?

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