Vulnerability identifier: #VU13510

Vulnerability risk: Low

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-5527

CWE-ID: CWE-400

Exploitation vector: 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 a remote attacker to cause DoS condition on the target system.

The vulnerability exists in virtual servers configured with a Client SSL or Server SSL profile due to a flaw in the SSL Forward Proxy feature. A remote unauthenticated attacker can cause the target Traffic Management Microkernel (TMM) to consume excessive memory and cause performance degradation or a system reboot.

Mitigation
The vulnerability is fixed in the version 13.1.0.8.

Vulnerable software versions

BIG-IP LTM: 13.0.0 - 13.1.0

BIG-IP AAM: 13.0.0 - 13.1.0

BIG-IP AFM: 13.0.0 - 13.1.0

BIG-IP Analytics: 13.0.0 - 13.1.0

BIG-IP APM: 13.0.0 - 13.1.0

BIG-IP ASM: 13.0.0 - 13.1.0

BIG-IP DNS: 13.0.0 - 13.1.0

BIG-IP Edge Gateway: 13.0.0 - 13.1.0

BIG-IP GTM: 13.0.0 - 13.1.0

BIG-IP Link Controller: 13.0.0 - 13.1.0

BIG-IP PEM: 13.0.0 - 13.1.0

BIG-IP WebSafe: 13.0.0 - 13.1.0

BIG-IP WebAccelerator: 13.0.0 - 13.1.0

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External links
http://support.f5.com/csp/article/K20134942

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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.