#VU24782 Untrusted search path in Qt - CVE-2020-0569

Vulnerability identifier: #VU24782

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-0569

CWE-ID: CWE-426

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Qt
Universal components / Libraries / Scripting languages

Vendor: Trolltech

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to QPluginLoader in Qt searches for certain plugins first on the current working directory of the application. A local user can place files in the file system and influence the working directory of Qt-based applications to load and execute malicious code. 

Note, this vulnerability does not affect Windows systems.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Qt: 5.0 - 5.0.2, 5.1 - 5.13.2, 5.2 - 5.2.1, 5.3 - 5.3.2, 5.4 - 5.4.2, 5.5 - 5.5.1, 5.6 - 5.6.3, 5.7 - 5.7.1, 5.8, 5.9 - 5.9.9

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External links
https://seclists.org/oss-sec/2020/q1/43

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.