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
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
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