CVE-2021-32622
17.05.2021, 20:15
Matrix-React-SDK is a react-based SDK for inserting a Matrix chat/voip client into a web page. Before version 3.21.0, when uploading a file, the local file preview can lead to execution of scripts embedded in the uploaded file. This can only occur after several user interactions to open the preview in a separate tab. This only impacts the local user while in the process of uploading. It cannot be exploited remotely or by other users. This vulnerability is patched in version 3.21.0.
| Vendor | Product | Version |
|---|---|---|
| matrix-react-sdk_project | matrix-react-sdk | 𝑥 < 3.21.0 |
𝑥
= Vulnerable software versions
Common Weakness Enumeration
- CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')The software constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
- CWE-434 - Unrestricted Upload of File with Dangerous TypeThe software allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment.