F5 BIG-IP Edge Client up to 7.1.9 on Windows Installer default permission

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.5$0-$5k0.00

Summaryinfo

A vulnerability has been found in F5 BIG-IP Edge Client 7.1.5/7.1.6/7.1.7/7.1.8/7.1.9 on Windows and classified as critical. Impacted is an unknown function of the component Installer. The manipulation leads to default permission. This vulnerability is traded as CVE-2020-5896. An attack has to be approached locally. There is no exploit available.

Detailsinfo

A vulnerability was found in F5 BIG-IP Edge Client 7.1.5/7.1.6/7.1.7/7.1.8/7.1.9 on Windows (Firewall Software) and classified as critical. This issue affects an unknown part of the component Installer. The manipulation with an unknown input leads to a default permission vulnerability. Using CWE to declare the problem leads to CWE-276. During installation, installed file permissions are set to allow anyone to modify those files. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

On versions 7.1.5-7.1.9, the BIG-IP Edge Client's Windows Installer Service's temporary folder has weak file and folder permissions.

The weakness was shared 05/12/2020. The identification of this vulnerability is CVE-2020-5896 since 01/06/2020. Attacking locally is a requirement. A simple authentication is necessary for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/13/2020). The attack technique deployed by this issue is T1222 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entries VDB-155041 and VDB-155040 are related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
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: Default permission
CWE: CWE-276 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/06/2020 🔍
05/12/2020 +127 days 🔍
05/13/2020 +1 days 🔍
05/13/2020 +0 days 🔍

Sourcesinfo

Vendor: f5.com

Status: Not defined

CVE: CVE-2020-5896 (🔍)
GCVE (CVE): GCVE-0-2020-5896
GCVE (VulDB): GCVE-100-155039
See also: 🔍

Entryinfo

Created: 05/13/2020 07:20
Updated: 05/13/2020 07:25
Changes: 05/13/2020 07:20 (37), 05/13/2020 07:25 (18)
Complete: 🔍
Cache ID: 216::103

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

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