CVE-2017-6163

moderate-risk
Published 2017-10-27

In F5 BIG-IP LTM, AAM, AFM, APM, ASM, Link Controller, PEM, PSM software version 12.0.0 to 12.1.2, 11.6.0 to 11.6.1, 11.4.0 to 11.5.4, when a virtual server uses the standard configuration of HTTP/2 or SPDY profile with Client SSL profile, and the client initiates a number of concurrent streams beyond the advertised limit can cause a disruption of service. Remote client initiating stream beyond the advertised limit can cause a disruption of service. The Traffic Management Microkernel (TMM) data plane is exposed to this issue; the control plane is not exposed.

Do I need to act?

~
1.5% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.9/10 Medium
NETWORK / HIGH complexity

Affected Products (20)

Affected Vendors

F5

References (6)

Third Party Advisory http://www.securityfocus.com/bid/101606
Third Party Advisory http://www.securitytracker.com/id/1039671
Vendor Advisory https://support.f5.com/csp/article/K22541983
Third Party Advisory http://www.securityfocus.com/bid/101606
Third Party Advisory http://www.securitytracker.com/id/1039671
Vendor Advisory https://support.f5.com/csp/article/K22541983
48
/ 100
moderate-risk
Severity 18/34 · Moderate
Exploitability 4/34 · Minimal
Exposure 26/34 · High