webkitgtk-2.26.3

[Xi Ruoyao]

Fix issues while trying to play a video on NextCloud.
Make sure the GL video sink uses a valid WebKit shared GL context.
Fix vertical alignment of text containing arabic diacritics.
Fix build with icu 65.1.
Fix page loading errors with websites using HSTS.
Fix web process crash when displaying a KaTeX formula.
Fix several crashes and rendering issues.

[Douglas R. Reno]

------------------------------------------------------------------------
WebKitGTK and WPE WebKit Security Advisory                 WSA-2020-0001
------------------------------------------------------------------------

Date reported           : January 23, 2020
Advisory ID             : WSA-2020-0001
WebKitGTK Advisory URL  : https://webkitgtk.org/security/WSA-2020-0001.html
WPE WebKit Advisory URL : https://wpewebkit.org/security/WSA-2020-0001.html
CVE identifiers         : CVE-2019-8835, CVE-2019-8844, CVE-2019-8846.

Several vulnerabilities were discovered in WebKitGTK and WPE WebKit.

CVE-2019-8835
    Versions affected: WebKitGTK before 2.26.3 and WPE WebKit before
    2.26.3.
    Credit to Anonymous working with Trend Micro's Zero Day Initiative,
    Mike Zhang of Pangu Team.
    Impact: Processing maliciously crafted web content may lead to
    arbitrary code execution. Description: Multiple memory corruption
    issues were addressed with improved memory handling.

CVE-2019-8844
    Versions affected: WebKitGTK before 2.26.3 and WPE WebKit before
    2.26.3.
    Credit to William Bowling (@wcbowling).
    Impact: Processing maliciously crafted web content may lead to
    arbitrary code execution. Description: Multiple memory corruption
    issues were addressed with improved memory handling.

CVE-2019-8846
    Versions affected: WebKitGTK before 2.26.3 and WPE WebKit before
    2.26.3.
    Credit to Marcin Towalski of Cisco Talos.
    Impact: Processing maliciously crafted web content may lead to
    arbitrary code execution. Description: A use after free issue was
    addressed with improved memory management.


We recommend updating to the latest stable versions of WebKitGTK and WPE
WebKit. It is the best way to ensure that you are running safe versions
of WebKit. Please check our websites for information about the latest
stable releases.

Further information about WebKitGTK and WPE WebKit security advisories
can be found at: https://webkitgtk.org/security.html or
https://wpewebkit.org/security/.

The WebKitGTK and WPE WebKit team,
January 23, 2020

[Bruce Dubbs]

Fixed at revision 22599.