High severity · published Sep 7, 2016
CVE-2016-6876
The RESOLV::lookup iRule command in F5 BIG-IP LTM, APM, ASM, and Link Controller 10.2.1 through 10.2.4, 11.2.1, 11.4.x, 11.5.x before 11.5.4 HF2, 11.6.x before 11.6.1, and 12.0.0…
7.5
CVSS
1.6%
EPSS
No
On KEV
Description
The RESOLV::lookup iRule command in F5 BIG-IP LTM, APM, ASM, and Link Controller 10.2.1 through 10.2.4, 11.2.1, 11.4.x, 11.5.x before 11.5.4 HF2, 11.6.x before 11.6.1, and 12.0.0 before HF3; BIG-IP AAM, AFM, and PEM 11.4.x, 11.5.x before 11.5.4 HF2, 11.6.x before 11.6.1, and 12.0.0 before HF3; BIG-IP Analytics 11.2.1, 11.4.x, 11.5.x before 11.5.4 HF2, 11.6.x before 11.6.1, and 12.0.0 before HF3; BIG-IP DNS 12.0.0 before HF3; BIG-IP Edge Gateway, WebAccelerator, and WOM 10.2.1 through 10.2.4 and 11.2.1; BIG-IP GTM 10.2.1 through 10.2.4, 11.2.1, 11.4.x, 11.5.x before 11.5.4 HF2, and 11.6.x before 11.6.1; and BIG-IP PSM 10.2.1 through 10.2.4 and 11.4.0 through 11.4.1 allows remote DNS servers to cause a denial of service (CPU consumption or Traffic Management Microkernel crash) via a crafted PTR response.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.6% · higher than 75% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BA
Big-ip Access Policy Manager · F5
10.2.1; 10.2.2; 10.2.3; 10.2.4; 11.2.1; 11.4.0; +8 more · source: NVD
BA
Big-ip Advanced Firewall Manager · F5
11.4.0; 11.4.1; 11.5.0; 11.5.1; 11.5.2; 11.5.3; +3 more · source: NVD
BA
Big-ip Analytics · F5
11.2.1; 11.4.0; 11.4.1; 11.5.0; 11.5.1; 11.5.2; +4 more · source: NVD
BA
Big-ip Application Acceleration Manager · F5
11.4.0; 11.4.1; 11.5.0; 11.5.1; 11.5.2; 11.5.3; +3 more · source: NVD
BA
Big-ip Application Security Manager · F5
10.2.1; 10.2.2; 10.2.3; 10.2.4; 11.2.1; 11.4.0; +8 more · source: NVD
BD
Big-ip Domain Name System · F5
12.0.0 · source: NVD
BE
Big-ip Edge Gateway · F5
10.2.1; 10.2.2; 10.2.3; 10.2.4; 11.2.1 · source: NVD
BG
Big-ip Global Traffic Manager · F5
10.2.1; 10.2.2; 10.2.3; 10.2.4; 11.2.1; 11.4.0; +7 more · source: NVD
BL
Big-ip Link Controller · F5
10.2.1; 10.2.2; 10.2.3; 10.2.4; 11.2.1; 11.4.0; +8 more · source: NVD
BL
Big-ip Local Traffic Manager · F5
10.2.1; 10.2.2; 10.2.3; 10.2.4; 11.2.1; 11.4.0; +8 more · source: NVD
BP
Big-ip Policy Enforcement Manager · F5
11.4.0; 11.4.1; 11.5.0; 11.5.1; 11.5.2; 11.5.3; +3 more · source: NVD
BP
Big-ip Protocol Security Module · F5
10.2.1; 10.2.2; 10.2.3; 10.2.4; 11.4.0; 11.4.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-6876
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-6876
Third Party Advisory
http://www.securitytracker.com/id/1036725
Vendor Advisory
https://support.f5.com/kb/en-us/solutions/public/k/52/sol52638558.html
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