Qt 6.3.2 QML QtScript Reflect API integer overflow

Summaryinfo

A vulnerability has been found in Qt 6.3.2 and classified as critical. Impacted is an unknown function of the component QML QtScript Reflect API. This manipulation causes integer overflow. The identification of this vulnerability is CVE-2022-40983. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical was found in Qt 6.3.2. Affected by this vulnerability is an unknown part of the component QML QtScript Reflect API. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

An integer overflow vulnerability exists in the QML QtScript Reflect API of Qt Project Qt 6.3.2. A specially-crafted javascript code can trigger an integer overflow during memory allocation, which can lead to arbitrary code execution. Target application would need to access a malicious web page to trigger this vulnerability.

The weakness was shared 01/12/2023 as TALOS-2022-1617. It is possible to read the advisory at talosintelligence.com. This vulnerability is known as CVE-2022-40983 since 09/20/2022. It demands that the victim is doing some kind of user interaction. 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 08/18/2025).

The vulnerability scanner Nessus provides a plugin with the ID 251147 (Linux Distros Unpatched Vulnerability : CVE-2022-40983), which helps to determine the existence of the flaw in a target environment.

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

The vulnerability is also documented in the vulnerability database at Tenable (251147). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

• Qt

Version

• 6.3.2

License

• open-source

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CPE 2.2info

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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