This update for webkit2gtk3 to version 2.20.3 fixes the issues:

The following security vulnerabilities were addressed:

- CVE-2018-12911: Fixed an off-by-one error in xdg_mime_get_simple_globs
(boo#1101999)
- CVE-2017-13884: 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#1075775).
- CVE-2017-13885: 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#1075775).
- CVE-2017-7153: An unspecified issue allowed remote attackers to spoof
user-interface information (about whether the entire content is derived from a
valid TLS session) via a crafted web site that sends a 401 Unauthorized
redirect (bsc#1077535).
- CVE-2017-7160: 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#1075775).
- CVE-2017-7161: An unspecified issue allowed remote attackers to execute
arbitrary code via special characters that trigger command injection
(bsc#1075775, bsc#1077535).
- CVE-2017-7165: 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#1075775).
- CVE-2018-4088: 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#1075775).
- CVE-2018-4096: 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#1075775).
- CVE-2018-4200: 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 a
WebCore::jsElementScrollHeightGetter use-after-free (bsc#1092280).
- CVE-2018-4204: 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#1092279).
- CVE-2018-4101: 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#1088182).
- CVE-2018-4113: An issue in the JavaScriptCore function in the "WebKit"
component allowed attackers to trigger an assertion failure by leveraging
improper array indexing (bsc#1088182)
- CVE-2018-4114: 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#1088182)
- CVE-2018-4117: An unspecified issue allowed remote attackers to bypass the
Same Origin Policy and obtain sensitive information via a crafted web site
(bsc#1088182, bsc#1102530).
- CVE-2018-4118: 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#1088182)
- CVE-2018-4119: 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#1088182)
- CVE-2018-4120: 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#1088182).
- CVE-2018-4121: 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#1092278).
- CVE-2018-4122: 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#1088182).
- CVE-2018-4125: 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#1088182).
- CVE-2018-4127: 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#1088182).
- CVE-2018-4128: 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#1088182).
- CVE-2018-4129: 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#1088182).
- CVE-2018-4146: An unspecified issue allowed attackers to cause a denial of
service (memory corruption) via a crafted web site (bsc#1088182).
- CVE-2018-4161: 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#1088182).
- CVE-2018-4162: 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#1088182).
- CVE-2018-4163: 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#1088182).
- CVE-2018-4165: 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#1088182).
- 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-2018-4246: An unspecified issue allowed remote attackers to execute
arbitrary code via a crafted web site that leverages type confusion
(bsc#1104169)
- CVE-2018-11646: webkitFaviconDatabaseSetIconForPageURL and
webkitFaviconDatabaseSetIconURLForPageURL mishandled an unset pageURL, leading
to an application crash (bsc#1095611)
- CVE-2018-4133: A Safari cross-site scripting (XSS) vulnerability allowed
remote attackers to inject arbitrary web script or HTML via a crafted URL
(bsc#1088182).
- CVE-2018-11713: The libsoup network backend of WebKit unexpectedly failed to
use system proxy settings for WebSocket connections. As a result, users could
be deanonymized by crafted web sites via a WebSocket connection (bsc#1096060).
- CVE-2018-11712: The libsoup network backend of WebKit failed to perform TLS
certificate verification for WebSocket connections (bsc#1096061).

This update for webkit2gtk3 fixes the following issues:

- Fixed a crash when atk_object_ref_state_set is called on an AtkObject that's
being destroyed (bsc#1088932).
- Fixed crash when using Wayland with QXL/virtio (bsc#1079512)
- Disable Gigacage if mmap fails to allocate in Linux.
- Add user agent quirk for paypal website.
- Properly detect compiler flags, needed libs, and fallbacks for
usage of 64-bit atomic operations.
- 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.
- Do TLS error checking on GTlsConnection::accept-certificate to
finish the load earlier in case of errors.
- Properly close the connection to the nested wayland compositor
in the Web Process.
- Avoid painting backing stores for zero-opacity layers.
- Fix downloads started by context menu failing in some websites
due to missing user agent HTTP header.
- Fix video unpause when GStreamerGL is disabled.
- Fix several GObject introspection annotations.
- Update user agent quiks to fix Outlook.com and Chase.com.
- Fix several crashes and rendering issues.
- Improve error message when Gigacage cannot allocate virtual memory.
- Add missing WebKitWebProcessEnumTypes.h to webkit-web-extension.h.
- Improve web process memory monitor thresholds.
- Fix a web process crash when the web view is created and destroyed quickly.
- Fix a network process crash when load is cancelled while searching for
stored HTTP auth credentials.
- Fix the build when ENABLE_VIDEO, ENABLE_WEB_AUDIO and
ENABLE_XSLT are disabled.
- New API to retrieve and delete cookies with WebKitCookieManager.
- New web process API to detect when form is submitted via JavaScript.
- Several improvements and fixes in the touch/gestures support.
- Support for the “system” CSS font family.
- Complex text rendering improvements and fixes.
- More complete and spec compliant WebDriver implementation.
- Ensure DNS prefetching cannot be re-enabled if disabled by settings.
- Fix seek sometimes not working.
- Fix rendering of emojis that were using the wrong scale factor
in some cases.
- Fix rendering of combining enclosed keycap.
- Fix rendering scale of some layers in HiDPI.
- Fix a crash in Wayland when closing the web view.
- Fix crashes upower crashes when running inside a chroot or on
systems with broken dbus/upower.
- Fix memory leaks in GStreamer media backend when using
GStreamer 1.14.
- Fix several crashes and rendering issues.
- Add ENABLE_ADDRESS_SANITIZER to make it easier to build with
asan support.
- Fix a crash a under Wayland when using mesa software
rasterization.
- Make fullscreen video work again.
- Fix handling of missing GStreamer elements.
- Fix rendering when webm video is played twice.
- Fix kinetic scrolling sometimes jumping around.
- Fix build with ICU configured without collation support.
- WebSockets use system proxy settings now (requires libsoup 2.61.90).
- Show the context menu on long-press gesture.
- Add support for Shift + mouse scroll to scroll horizontally.
- Fix zoom gesture to actually zoom instead of changing the page
scale.
- Implement support for Graphics ARIA roles.
- Make sleep inhibitors work under Flatpak.
- Add get element CSS value command to WebDriver.
- Fix a crash aftter a swipe gesture.
- Fix several crashes and rendering issues.
- Fix crashes due to duplicated symbols in libjavascriptcoregtk
and libwebkit2gtk.
- Fix parsing of timeout values in WebDriver.
- Implement get timeouts command in WebDriver.
- Fix deadlock in GStreamer video sink during shutdown when
accelerated compositing is disabled.
- Fix several crashes and rendering issues.
- Add web process API to detect when form is submitted via
JavaScript.
- Add new API to replace
webkit_form_submission_request_get_text_fields() that is now
deprecated.
- Add WebKitWebView::web-process-terminated signal and deprecate
web-process-crashed.
- Fix rendering issues when editing text areas.
- Use FastMalloc based GstAllocator for GStreamer.
- Fix web process crash at startup in bmalloc.
- Fix several memory leaks in GStreamer media backend.
- WebKitWebDriver process no longer links to
libjavascriptcoregtk.
- Fix several crashes and rendering issues.
- Add new API to add, retrieve and delete cookies via
WebKitCookieManager.
- Add functions to WebSettings to convert font sizes between
points and pixels.
- Ensure cookie operations take effect when they happen before a
web process has been spawned.
- Automatically adjust font size when GtkSettings:gtk-xft-dpi
changes.
- Add initial resource load statistics support.
- Add API to expose availability of certain editing commands in
WebKitEditorState.
- Add API to query whether a WebKitNavigationAction is a redirect
or not.
- Improve complex text rendering.
- Add support for the "system" CSS font family.
- Disable USE_GSTREAMER_GL

This update was imported from the SUSE:SLE-12-SP2:Update update project.