Vulnerability Details : CVE-2016-9256
In F5 BIG-IP 12.1.0 through 12.1.2, permissions enforced by iControl can lag behind the actual permissions assigned to a user if the role_map is not reloaded between the time the permissions are changed and the time of the user's next request. This is a race condition that occurs rarely in normal usage; the typical period in which this is possible is limited to at most a few seconds after the permission change.
Products affected by CVE-2016-9256
- cpe:2.3:a:f5:big-ip_local_traffic_manager:12.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_local_traffic_manager:12.1.1:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_local_traffic_manager:12.1.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_local_traffic_manager:12.1.2:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_application_security_manager:12.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_application_security_manager:12.1.1:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_application_security_manager:12.1.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_application_security_manager:12.1.2:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_access_policy_manager:12.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_access_policy_manager:12.1.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_access_policy_manager:12.1.1:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_access_policy_manager:12.1.2:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_link_controller:12.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_link_controller:12.1.1:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_link_controller:12.1.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_link_controller:12.1.2:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_analytics:12.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_analytics:12.1.1:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_analytics:12.1.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_analytics:12.1.2:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_application_acceleration_manager:12.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_application_acceleration_manager:12.1.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_application_acceleration_manager:12.1.1:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_application_acceleration_manager:12.1.2:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_advanced_firewall_manager:12.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_advanced_firewall_manager:12.1.1:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_advanced_firewall_manager:12.1.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_advanced_firewall_manager:12.1.2:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_policy_enforcement_manager:12.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_policy_enforcement_manager:12.1.1:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_policy_enforcement_manager:12.1.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_policy_enforcement_manager:12.1.2:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_domain_name_system:12.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_domain_name_system:12.1.1:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_domain_name_system:12.1.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_domain_name_system:12.1.2:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_websafe:12.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_websafe:12.1.0:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_websafe:12.1.2:*:*:*:*:*:*:*
- cpe:2.3:a:f5:big-ip_websafe:12.1.1:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2016-9256
0.10%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 40 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2016-9256
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.0
|
MEDIUM | AV:N/AC:M/Au:S/C:P/I:P/A:P |
6.8
|
6.4
|
NIST | |
|
7.5
|
HIGH | CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.6
|
5.9
|
NIST |
CWE ids for CVE-2016-9256
-
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.Assigned by: nvd@nist.gov (Primary)
References for CVE-2016-9256
-
https://support.f5.com/csp/article/K47284724
Vendor Advisory
-
http://www.securityfocus.com/bid/96464
Multiple F5 BIG-IP Products CVE-2016-9256 Privilege Escalation VulnerabilityThird Party Advisory;VDB Entry
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