Medium severity · published Nov 22, 2017
CVE-2017-6166
In BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, DNS, Link Controller, PEM, and WebSafe software 12.0.0 to 12.1.1, in some cases the Traffic Management Microkernel (TMM) may crash…
5.9
CVSS
1.9%
EPSS
No
On KEV
Description
In BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, DNS, Link Controller, PEM, and WebSafe software 12.0.0 to 12.1.1, in some cases the Traffic Management Microkernel (TMM) may crash when processing fragmented packets. This vulnerability affects TMM through a virtual server configured with a FastL4 profile. Traffic processing is disrupted while TMM restarts. If the affected BIG-IP system is configured as part of a device group, it will trigger a failover to the peer device.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.9% · higher than 80% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BA
Big-ip Afm · F5
12.0.0 through 12.1.1 · source: NVD
BA
Big-ip Analytics · F5
12.0.0 through 12.1.1 · source: NVD
BA
Big-ip Apm · F5
12.0.0 through 12.1.1 · source: NVD
BA
Big-ip Application Acceleration Manager · F5
12.0.0 through 12.1.1 · source: NVD
BA
Big-ip Asm · F5
12.0.0 through 12.1.1 · source: NVD
BD
Big-ip Dns · F5
12.0.0 through 12.1.1 · source: NVD
BL
Big-ip Link Controller · F5
12.0.0 through 12.1.1 · source: NVD
BL
Big-ip Ltm · F5
12.0.0 through 12.1.1 · source: NVD
BP
Big-ip Pem · F5
12.0.0 through 12.1.1 · source: NVD
FW
F5 Websafe · F5
12.0.0 through 12.1.1 · source: NVD
LI
Linerate · F5
2.5.0 through 2.6.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-6166
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-6166
Third Party Advisory
http://www.securityfocus.com/bid/102264
Third Party Advisory
http://www.securitytracker.com/id/1039949
Issue Tracking
https://support.f5.com/csp/article/K65615624
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On BIG-IP versions 11.6.0-11.6.2 (fixed in 11.6.2 HF1), 12.0.0-12.1.2 HF1 (fixed in 12.1.2 HF2), or 13.0.0-13.0.0 HF2 (fixed in 13.0.0 HF3) a virtual server configured with a…