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CVE-2016-9256

UnknownEPSS 1.04%

Last modified

CVE-2016-9256 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.04% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability
1.04%

59.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
F5Big-Ip Local Traffic Manager12.0.0
F5Big-Ip Local Traffic Manager12.1.0
F5Big-Ip Local Traffic Manager12.1.1
F5Big-Ip Local Traffic Manager12.1.2
F5Big-Ip Application Acceleration Manager12.0.0
F5Big-Ip Application Acceleration Manager12.1.0
F5Big-Ip Application Acceleration Manager12.1.1
F5Big-Ip Application Acceleration Manager12.1.2
F5Big-Ip Advanced Firewall Manager12.0.0
F5Big-Ip Advanced Firewall Manager12.1.0
F5Big-Ip Advanced Firewall Manager12.1.1
F5Big-Ip Advanced Firewall Manager12.1.2
F5Big-Ip Analytics12.0.0
F5Big-Ip Analytics12.1.0
F5Big-Ip Analytics12.1.1
F5Big-Ip Analytics12.1.2
F5Big-Ip Access Policy Manager12.0.0
F5Big-Ip Access Policy Manager12.1.0
F5Big-Ip Access Policy Manager12.1.1
F5Big-Ip Access Policy Manager12.1.2
F5Big-Ip Application Security Manager12.0.0
F5Big-Ip Application Security Manager12.1.0
F5Big-Ip Application Security Manager12.1.1
F5Big-Ip Application Security Manager12.1.2
F5Big-Ip Domain Name System12.0.0
F5Big-Ip Domain Name System12.1.0
F5Big-Ip Domain Name System12.1.1
F5Big-Ip Domain Name System12.1.2
F5Big-Ip Link Controller12.0.0
F5Big-Ip Link Controller12.1.0
F5Big-Ip Link Controller12.1.1
F5Big-Ip Link Controller12.1.2
F5Big-Ip Policy Enforcement Manager12.0.0
F5Big-Ip Policy Enforcement Manager12.1.0
F5Big-Ip Policy Enforcement Manager12.1.1
F5Big-Ip Policy Enforcement Manager12.1.2
F5Big-Ip Websafe12.0.0
F5Big-Ip Websafe12.1.0
F5Big-Ip Websafe12.1.1
F5Big-Ip Websafe12.1.2

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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.
How severe is CVE-2016-9256?
Severity scoring for CVE-2016-9256 is pending analysis. The EPSS model estimates a 1.04% probability of exploitation in the next 30 days.
How do I fix CVE-2016-9256?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

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Source: NVD / NIST