This update for webkit2gtk3 to version 2.20.3 fixes the following issues:

These security issues were fixed:

- CVE-2018-4190: An unspecified issue allowed remote attackers to obtain
sensitive credential information that is transmitted during a CSS mask-image
fetch (bsc#1097693).
- CVE-2018-4199: An unspecified issue allowed remote attackers to execute
arbitrary code or cause a denial of service (buffer overflow and application
crash) via a crafted web site (bsc#1097693)
- CVE-2018-4218: An unspecified issue allowed remote attackers to execute
arbitrary code or cause a denial of service (memory corruption and application
crash) via a crafted web site that triggers an @generatorState use-after-free
(bsc#1097693)
- CVE-2018-4222: An unspecified issue allowed remote attackers to execute
arbitrary code via a crafted web site that leverages a getWasmBufferFromValue
out-of-bounds read during WebAssembly compilation (bsc#1097693)
- CVE-2018-4232: An unspecified issue allowed remote attackers to overwrite
cookies via a crafted web site (bsc#1097693)
- CVE-2018-4233: An unspecified issue allowed remote attackers to execute
arbitrary code or cause a denial of service (memory corruption and application
crash) via a crafted web site (bsc#1097693)
- CVE-2018-11646: webkitFaviconDatabaseSetIconForPageURL and
webkitFaviconDatabaseSetIconURLForPageURL mishandle an unset pageURL, leading
to an application crash (bsc#1095611).

These non-security issues were fixed:

- Disable Gigacage if mmap fails to allocate in Linux.
- Add user agent quirk for paypal website.
- Fix a network process crash when trying to get cookies of about:blank page.
- Fix UI process crash when closing the window under Wayland.
- Fix several crashes and rendering issues.

This update was imported from the SUSE:SLE-15:Update update project.