Vulnerability identifier: #VU12295

Vulnerability risk: Medium

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-5510

CWE-ID: CWE-404

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
BIG-IP Analytics
Hardware solutions / Security hardware applicances
BIG-IP LTM
Hardware solutions / Security hardware applicances
BIG-IP AFM
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 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 weakness exists in the Traffic Management Microkernel due to improper resource shutdown when processing a specific sequence of packets on IPv6 virtual servers. A remote attacker can cause the service to crash.

Mitigation
Update to version 11.5.6.

Vulnerable software versions

BIG-IP Analytics: 11.5.4 HF4 - 11.5.5

BIG-IP LTM: 11.5.4 HF4 - 11.5.5

BIG-IP AAM: 11.5.4 HF4 - 11.5.5

BIG-IP AFM: 11.5.4 HF4 - 11.5.5

BIG-IP APM: 11.5.4 HF4 - 11.5.5

BIG-IP ASM: 11.5.4 HF4 - 11.5.5

BIG-IP DNS: 11.5.4 HF4 - 11.5.5

BIG-IP Edge Gateway: 11.5.4 HF4 - 11.5.5

BIG-IP GTM: 11.5.4 HF4 - 11.5.5

BIG-IP PEM: 11.5.4 HF4 - 11.5.5

BIG-IP WebAccelerator: 11.5.4 HF4 - 11.5.5

BIG-IP WebSafe: 11.5.4 HF4 - 11.5.5

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External links
http://support.f5.com/csp/article/K77671456

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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.