Type Confusion in WPE WebKit and WebKitGTK+ - CVE-2019-8506

Vulnerability identifier: #VU23361

CSH Severity: High

CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2019-8506

CWE-ID: CWE-843

Exploitation vector: Remote access

Exploit availability: The vulnerability is being exploited in the wild

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

The vulnerability exists due to a type confusion error when processing maliciously crafted web content. A remote attacker can trigger a type confusion error and execute arbitrary code on the target system.

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

WPE WebKit
WebKitGTK+
Opensuse
Ubuntu
webkit2gtk (Alpine package)
libwebkit2gtk-4.0-37 (Ubuntu package)
libjavascriptcoregtk-4.0-18 (Ubuntu package)

Install updates from vendor's website.

WPE WebKit - update to 2.24.0
WebKitGTK+ - update to 2.24.0
webkit2gtk (Alpine package) - update to 2.24.2-r0
libwebkit2gtk-4.0-37 (Ubuntu package) - addressed in versions 2.24.1-0ubuntu0.18.04.1, 2.24.1-0ubuntu0.18.10.2
libjavascriptcoregtk-4.0-18 (Ubuntu package) - addressed in versions 2.24.1-0ubuntu0.18.04.1, 2.24.1-0ubuntu0.18.10.2

• https://webkitgtk.org/security/WSA-2019-0002.html

• Type Confusion in WebKitGTK WebKitGTK+
• OpenSUSE Linux update for webkit2gtk3
• OpenSUSE Linux update for webkit2gtk3
• Type Confusion in webkit2gtk (Alpine package)
• Ubuntu update for webkit2gtk