Zero-day vulnerability in Microsoft Internet Explorer

Out-of-bounds read
CVE-2019-0676

Vulnerability details

Advisory: SB2019021219 - Information Disclosure in Microsoft Internet Explorer

Vulnerable component: Microsoft Internet Explorer

CVE-ID: CVE-2019-0676

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:H/RL:O/RC:C

CWE-ID: CWE-125 - Out-of-bounds read

Description:

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to boundary error when processing HTML content. A remote attacker can trick the victim to open a specially crafted webpage, trigger out-of-bounds read and test for the presence of files on disk.

External links:

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0676

About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.