Buffer overflow in Microsoft Edge - CVE-2023-21775

Vulnerability identifier: #VU71147

CSH Severity: High

CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2023-21775

CWE-ID: CWE-119

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing HTML content. A remote attacker can trick the victim to visit a specially crafted web page, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Microsoft Edge
Gentoo Linux
dev-qt/qtwebengine
www-client/microsoft-edge
www-client/chromium-bin
www-client/google-chrome
www-client/chromium

Install updates from vendor's website.

Microsoft Edge - addressed in versions 108.0.1462.83, 109.0.1518.49
dev-qt/qtwebengine - update to 103.0.5060.53
www-client/microsoft-edge - update to 109.0.1518.61
www-client/chromium-bin - update to 109.0.5414.74
www-client/google-chrome - update to 109.0.5414.74
www-client/chromium - update to 109.0.5414.74-r1

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-21775

• Multiple vulnerabilities in Microsoft Edge
• Gentoo update for Chromium, Google Chrome, Microsoft Edge
• Gentoo update for QtWebEngine