CVE-2019-6743: mi mi6_browser Out-of-bounds Write

Vulnerability summary

CVE-2019-6743 is a high (CVSS 8.8) Out-of-bounds Write vulnerability in mi mi6_browser. EPSS estimates a 2.45% chance of exploitation in the next 30 days, higher than 84.1% of scored vulnerabilities.

Timeline

1. 03-06-2019
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

Description

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Xiaomi Mi6 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 WebAssembly.Instance method. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-7466.

• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.