An integer overflow flaw was found in the V8 component of the Chromium browser.

Upstream bug(s):

https://code.google.com/p/chromium/issues/detail?id=808192

External References:

https://chromereleases.googleblog.com/2018/03/stable-channel-update-for-desktop.html

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Xiaomi Browser Prior to 10.4.0. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of the miui.share application. The issue results from the lack of proper validation of user-supplied data, which can result in an arbitrary application download. An attacker can leverage this vulnerability to execute code in the context of the user. Was ZDI-CAN-7483.

This vulnerability allows network adjacent attackers to execute arbitrary code on affected installations of Xiaomi Browser Prior to 10.4.0. User interaction is required to exploit this vulnerability in that the target must connect to a malicious access point. The specific flaw exists within the handling of HTTP responses to the Captive Portal. A crafted HTML response can cause the Captive Portal to to open a browser to a specified location without user interaction. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the current process. Was ZDI-CAN-7467.

An intent redirection vulnerability in the Mi Browser product. This vulnerability is caused by the Mi Browser does not verify the validity of the incoming data. Attackers can perform sensitive operations by exploiting this.

A URL spoofing vulnerability was found in all international versions of Xiaomi Mi browser 10.5.6-g (aka the MIUI native browser) and Mint Browser 1.5.3 due to the way they handle the "q" query parameter. The portion of an https URL before the ?q= substring is not shown to the user.