Privilege escalation in Qt



Published: 2020-01-30
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-0569
CWE-ID CWE-426
Exploitation vector Local
Public exploit N/A
Vulnerable software
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Qt
Universal components / Libraries / Scripting languages

Vendor Trolltech

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Untrusted search path

EUVDB-ID: #VU24782

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-0569

CWE-ID: CWE-426 - Untrusted Search Path

Exploit availability: No

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 - 5.13.2


CPE2.3 External links

http://seclists.org/oss-sec/2020/q1/43

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.



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