InstallBuilder for Qt Windows up to 20.6.x Installer untrusted search path

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability was found in InstallBuilder for Qt Windows up to 20.6.x. It has been declared as critical. Affected is an unknown function of the component Installer. The manipulation results in untrusted search path. This vulnerability is reported as CVE-2020-3979. The attack requires a local approach. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in InstallBuilder for Qt Windows up to 20.6.x. Affected is some unknown processing of the component Installer. The manipulation with an unknown input leads to a untrusted search path vulnerability. CWE is classifying the issue as CWE-426. The product searches for critical resources using an externally-supplied search path that can point to resources that are not under the product's direct control. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

InstallBuilder for Qt Windows (versions prior to 20.7.0) installers look for plugins at a predictable location at initialization time, writable by non-admin users. While those plugins are not required, they are loaded if present, which could allow an attacker to plant a malicious library which could result in code execution with the security scope of the installer.

The weakness was disclosed 09/18/2020 (Website). The advisory is available at blog.installbuilder.com. This vulnerability is traded as CVE-2020-3979 since 12/30/2019. Local access is required to approach this attack. Required for exploitation is a authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1574 by the MITRE ATT&CK project.

Upgrading to version 20.7.0 eliminates this vulnerability.

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Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Untrusted search path
CWE: CWE-426
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: InstallBuilder for Qt Windows 20.7.0

Timelineinfo

12/30/2019 🔍
09/18/2020 +263 days 🔍
09/19/2020 +1 days 🔍
09/19/2020 +0 days 🔍

Sourcesinfo

Advisory: blog.installbuilder.com
Status: Not defined

CVE: CVE-2020-3979 (🔍)
GCVE (CVE): GCVE-0-2020-3979
GCVE (VulDB): GCVE-100-161622

Entryinfo

Created: 09/19/2020 14:36
Updated: 09/19/2020 14:41
Changes: 09/19/2020 14:36 (38), 09/19/2020 14:41 (17)
Complete: 🔍
Cache ID: 216::103

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