F5 BIG-IP up to 12.0.0 EAV Monitor access control

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in F5 BIG-IP up to 12.0.0. This impacts an unknown function of the component EAV Monitor. The manipulation leads to access control. This vulnerability is documented as CVE-2016-5020. The attack can be initiated remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in F5 BIG-IP up to 12.0.0 (Firewall Software). This issue affects some unknown processing of the component EAV Monitor. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

F5 BIG-IP before 12.0.0 HF3 allows remote authenticated users to modify the account configuration of users with the Resource Administration role and gain privilege via a crafted external Extended Application Verification (EAV) monitor script.

The weakness was released 06/08/2016 as 520924 as confirmed advisory (Website). It is possible to read the advisory at support.f5.com. The identification of this vulnerability is CVE-2016-5020 since 05/24/2016. The exploitation is known to be easy. The attack may be initiated remotely. Required for exploitation is a simple authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 91525 (F5 Networks BIG-IP : Custom monitor privilege escalation vulnerability (K00265182)), 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 to version 12.0.0 HF3 or 12.1.0 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (91525), SecurityFocus (BID 91532†) and SecurityTracker (ID 1036131†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.6

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
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: 91525
Nessus Name: F5 Networks BIG-IP : Custom monitor privilege escalation vulnerability (K00265182)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 880435
OpenVAS Name: F5 BIG-IP - SOL00265182 - Custom monitor privilege escalation vulnerability CVE-2016-5020
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: BIG-IP 12.0.0 HF3/12.1.0

Timelineinfo

05/24/2016 🔍
06/08/2016 +15 days 🔍
06/08/2016 +0 days 🔍
06/08/2016 +0 days 🔍
06/09/2016 +1 days 🔍
06/18/2016 +9 days 🔍
06/18/2016 +0 days 🔍
06/30/2016 +12 days 🔍
01/29/2019 +943 days 🔍

Sourcesinfo

Vendor: f5.com

Advisory: 520924
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-5020 (🔍)
GCVE (CVE): GCVE-0-2016-5020
GCVE (VulDB): GCVE-100-88031
SecurityFocus: 91532 - Multiple F5 BIG-IP Products CVE-2016-5020 Privilege Escalation Vulnerability
SecurityTracker: 1036131

Entryinfo

Created: 06/18/2016 22:33
Updated: 01/29/2019 10:39
Changes: 06/18/2016 22:33 (70), 01/29/2019 10:39 (12)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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