High severity · published Aug 19, 2016
CVE-2016-5736
The default configuration of the IPsec IKE peer listener in F5 BIG-IP LTM, Analytics, APM, ASM, and Link Controller 11.2.1 before HF16, 11.4.x, 11.5.x before 11.5.4 HF2, 11.6.x…
7.5
CVSS
2.3%
EPSS
No
On KEV
Description
The default configuration of the IPsec IKE peer listener in F5 BIG-IP LTM, Analytics, APM, ASM, and Link Controller 11.2.1 before HF16, 11.4.x, 11.5.x before 11.5.4 HF2, 11.6.x before 11.6.1, and 12.x before 12.0.0 HF2; 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.x before 12.0.0 HF2; BIG-IP DNS 12.x before 12.0.0 HF2; BIG-IP Edge Gateway, WebAccelerator, and WOM 11.2.1 before HF16; BIG-IP GTM 11.2.1 before HF16, 11.4.x, 11.5.x before 11.5.4 HF2, and 11.6.x before 11.6.1; and BIG-IP PSM 11.4.0 through 11.4.1 improperly enables the anonymous IPsec IKE peer configuration object, which allows remote attackers to establish an IKE Phase 1 negotiation and possibly conduct brute-force attacks against Phase 2 negotiations via unspecified vectors.
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)2.3% · higher than 83% 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
11.2.1; 11.4.0; 11.4.1; 11.5.0; 11.5.1; 11.5.2; +14 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
11.2.1; 11.4.0; 11.4.1; 11.5.0; 11.5.1; 11.5.2; +4 more · source: NVD
BD
Big-ip Domain Name System · F5
12.0.0 · source: NVD
BE
Big-ip Edge Gateway · F5
11.2.1 · source: NVD
BG
Big-ip Global Traffic Manager · F5
11.2.1; 11.4.0; 11.4.1; 11.5.0; 11.5.1; 11.5.2; +3 more · source: NVD
BL
Big-ip Link Controller · F5
11.2.1; 11.4.0; 11.4.1; 11.5.0; 11.5.1; 11.5.2; +4 more · source: NVD
BL
Big-ip Local Traffic Manager · F5
11.2.1; 11.4.0; 11.4.1; 11.5.0; 11.5.1; 11.5.2; +4 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
11.4.0; 11.4.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-5736
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-5736
Third Party Advisory
http://www.securitytracker.com/id/1036618
Vendor Advisory
https://support.f5.com/kb/en-us/solutions/public/k/10/sol10133477.html
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