F5 BIG-IP 12.1.0/12.1.1/12.1.2 iControl race condition

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in F5 BIG-IP 12.1.0/12.1.1/12.1.2. The impacted element is an unknown function of the component iControl. Executing a manipulation can lead to race condition. The identification of this vulnerability is CVE-2016-9256. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical was found in F5 BIG-IP 12.1.0/12.1.1/12.1.2 (Firewall Software). This vulnerability affects an unknown function of the component iControl. The manipulation with an unknown input leads to a race condition vulnerability. The CWE definition for the vulnerability is CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence 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 that is operating concurrently. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The bug was discovered 05/09/2017. The weakness was shared 05/09/2017 (Website). The advisory is available at support.f5.com. This vulnerability was named CVE-2016-9256 since 11/09/2016. The attack can be initiated remotely. The successful exploitation requires a single authentication. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 97402 (F5 Networks BIG-IP : iControl vulnerability (K47284724)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family F5 Networks Local Security Checks and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (97402) and SecurityFocus (BID 96464†). The entries VDB-100955, VDB-100953 and VDB-100952 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.7

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Race condition
CWE: CWE-362
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 97402
Nessus Name: F5 Networks BIG-IP : iControl vulnerability (K47284724)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 800325
OpenVAS Name: F5 BIG-IP - iControl vulnerability CVE-2016-9256
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/09/2016 🔍
02/24/2017 +107 days 🔍
02/24/2017 +0 days 🔍
02/27/2017 +3 days 🔍
05/09/2017 +71 days 🔍
05/09/2017 +0 days 🔍
05/09/2017 +0 days 🔍
05/09/2017 +0 days 🔍
12/06/2022 +2037 days 🔍

Sourcesinfo

Vendor: f5.com

Advisory: K47284724
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-9256 (🔍)
GCVE (CVE): GCVE-0-2016-9256
GCVE (VulDB): GCVE-100-100954
SecurityFocus: 96464 - Multiple F5 BIG-IP Products CVE-2016-9256 Privilege Escalation Vulnerability
OSVDB: - CVE-2016-9256 - F5 - Big-Ip Access Policy Manager - Medium

See also: 🔍

Entryinfo

Created: 05/09/2017 23:01
Updated: 12/06/2022 09:00
Changes: 05/09/2017 23:01 (78), 12/06/2022 09:00 (4)
Complete: 🔍
Cache ID: 216:969:103

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