#VU17339 Buffer overflow in Qt - CVE-2018-19873

Vulnerability identifier: #VU17339

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-19873

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Qt
Universal components / Libraries / Scripting languages

Vendor: Trolltech

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to buffer overflow in QBmpHandler. A remote attacker can trick the victim into opening specially crafted BMP data, trigger memory corruption and cause the service to crash.

Mitigation
Update to version 5.11.3.

Vulnerable software versions

Qt: 5.0, 5.1 - 5.11.2, 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 - 5.9.7

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External links
https://blog.qt.io/blog/2018/12/04/qt-5-11-3-released-important-security-updates/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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