CVE-2019-8375 Memory corruption in n/a

Critical 9.8 Published 24 Feb 2019 Updated 4 Aug 2024

Remote attackers can cause a denial of service via buffer overflow in WebKitGTK by exceeding script dialog size limits.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2019-8375?

CVE-2019-8375 is a critical memory corruption vulnerability in Canonical Ubuntu Linux, published on 24 Feb 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The UIProcess subsystem in WebKit, as used in WebKitGTK through 2.23.90 and WebKitGTK+ through 2.22.6 and other products, does not prevent the script dialog size from exceeding the web view size, which allows remote attackers to cause a denial of service (Buffer Overflow) or possibly have unspecified other impact, related to UIProcess/API/gtk/WebKitScriptDialogGtk.cpp, UIProcess/API/gtk/WebKitScriptDialogImpl.cpp, and UIProcess/API/gtk/WebKitWebViewGtk.cpp, as demonstrated by GNOME Web (aka Epiphany).

Weakness: CWE-119

Which versions are affected by CVE-2019-8375?

It affects 4 products.

Linux distribution packages (13)

`webkit2gtk3` SUSE:Linux Enterprise Desktop 12 SP3	All versions	`2.24.0-2.38.2`
`webkit2gtk3` SUSE:Linux Enterprise Desktop 12 SP4	All versions	`2.24.0-2.38.2`
`webkit2gtk3` SUSE:Linux Enterprise Module for Basesystem 15	All versions	`2.24.0-3.21.1`
`webkit2gtk3` SUSE:Linux Enterprise Module for Desktop Applications 15	All versions	`2.24.0-3.21.1`
`webkit2gtk3` SUSE:Linux Enterprise Server 12 SP3	All versions	`2.24.0-2.38.2`
`webkit2gtk3` SUSE:Linux Enterprise Server 12 SP4	All versions	`2.24.0-2.38.2`
`webkit2gtk3` SUSE:Linux Enterprise Server for SAP Applications 12 SP3	All versions	`2.24.0-2.38.2`
`webkit2gtk3` SUSE:Linux Enterprise Server for SAP Applications 12 SP4	All versions	`2.24.0-2.38.2`
`webkit2gtk3` SUSE:Linux Enterprise Software Development Kit 12 SP3	All versions	`2.24.0-2.38.2`
`webkit2gtk3` SUSE:Linux Enterprise Software Development Kit 12 SP4	All versions	`2.24.0-2.38.2`
`webkit2gtk3` SUSE:Linux Enterprise Workstation Extension 12 SP3	All versions	`2.24.0-2.38.2`
`webkit2gtk3` SUSE:Linux Enterprise Workstation Extension 12 SP4	All versions	`2.24.0-2.38.2`
`webkit2gtk3` openSUSE:Leap 15.0	All versions	`2.24.0-lp150.2.16.1`

Products include Canonical Ubuntu Linux, Opensuse Leap, Webkitgtk Webkitgtk, Webkitgtk Webkitgtk\+.

How do I fix CVE-2019-8375?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2019-8375 being exploited?

There is no known exploitation of CVE-2019-8375 in the wild and no public exploit code.

Public exploit code: 1 Exploit-DB entry.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as DEBIAN-CVE-2019-8375, GHSA-f6vf-7m59-gfmp, SUSE-SU-2019:0890-1, SUSE-SU-2019:1030-1, UBUNTU-CVE-2019-8375, openSUSE-SU-2019:1206-1.