Buffer overflow in WPE WebKit and WebKitGTK+ - CVE-2019-8518

Vulnerability identifier: #VU23363

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-2019-8518

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 maliciously crafted web content. A remote attacker can trigger memory corruption and execute arbitrary code on the target system.

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

WPE WebKit
WebKitGTK+
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for Power, little endian
Opensuse
Ubuntu
libwebkit2gtk-4.0-37 (Ubuntu package)
libjavascriptcoregtk-4.0-18 (Ubuntu package)
webkitgtk4 (Red Hat package)

Install updates from vendor's website.

WPE WebKit - addressed in versions 2.22.4, 2.22.5
WebKitGTK+ - addressed in versions 2.22.6, 2.22.7
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
webkitgtk4 (Red Hat package) - update to 2.22.7-2.el7

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

• Buffer overflow in WebKitGTK WebKitGTK+
• OpenSUSE Linux update for webkit2gtk3
• Red Hat Enterprise Linux 7 update for webkitgtk4
• Ubuntu update for webkit2gtk