Security update for webkit2gtk3 (moderate)

An update that fixes 15 vulnerabilities is now available.

Description:

This update for webkit2gtk3 to version 2.22.6 fixes the following issues
(boo#1124937 boo#1119558):

Security vulnerabilities fixed:

• CVE-2018-4437: Processing maliciously crafted web content may lead to
  arbitrary code execution. Multiple memory corruption issues were
  addressed with improved memory handling. (boo#1119553)
• CVE-2018-4438: Processing maliciously crafted web content may lead to
  arbitrary code execution. A logic issue existed resulting in memory
  corruption. This was addressed with improved state management.
  (boo#1119554)
• CVE-2018-4441: Processing maliciously crafted web content may lead to
  arbitrary code execution. A memory corruption issue was addressed with
  improved memory handling. (boo#1119555)
• CVE-2018-4442: Processing maliciously crafted web content may lead to
  arbitrary code execution. A memory corruption issue was addressed with
  improved memory handling. (boo#1119556)
• CVE-2018-4443: Processing maliciously crafted web content may lead to
  arbitrary code execution. A memory corruption issue was addressed with
  improved memory handling. (boo#1119557)
• CVE-2018-4464: Processing maliciously crafted web content may lead to
  arbitrary code execution. Multiple memory corruption issues were
  addressed with improved memory handling. (boo#1119558)
• CVE-2019-6212: Processing maliciously crafted web content may lead to
  arbitrary code execution. Multiple memory corruption issues were
  addressed with improved memory handling.
• CVE-2019-6215: Processing maliciously crafted web content may lead to
  arbitrary code execution. A type confusion issue was addressed with
  improved memory handling.
• CVE-2019-6216: Processing maliciously crafted web content may lead to
  arbitrary code execution. Multiple memory corruption issues were
  addressed with improved memory handling.
• CVE-2019-6217: Processing maliciously crafted web content may lead to
  arbitrary code execution. Multiple memory corruption issues were
  addressed with improved memory handling.
• CVE-2019-6226: Processing maliciously crafted web content may lead to
  arbitrary code execution. Multiple memory corruption issues were
  addressed with improved memory handling.
• CVE-2019-6227: Processing maliciously crafted web content may lead to
  arbitrary code execution. A memory corruption issue was addressed with
  improved memory handling.
• CVE-2019-6229: Processing maliciously crafted web content may lead to
  universal cross site scripting. A logic issue was addressed with
  improved validation.
• CVE-2019-6233: Processing maliciously crafted web content may lead to
  arbitrary code execution. A memory corruption issue was addressed with
  improved memory handling.
• CVE-2019-6234: Processing maliciously crafted web content may lead to
  arbitrary code execution. A memory corruption issue was addressed with
  improved memory handling.

Other bug fixes and changes:

• Make kinetic scrolling slow down smoothly when reaching the ends of
  pages, instead of abruptly, to better match the GTK+ behaviour.
• Fix Web inspector magnifier under Wayland.
• Fix garbled rendering of some websites (e.g. YouTube) while scrolling
  under X11.
• Fix several crashes, race conditions, and rendering issues.

For a detailed list of changes, please refer to:

• https://webkitgtk.org/security/WSA-2019-0001.html
• https://webkitgtk.org/2019/02/09/webkitgtk2.22.6-released.html
• https://webkitgtk.org/security/WSA-2018-0009.html
• https://webkitgtk.org/2018/12/13/webkitgtk2.22.5-released.html

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

Patch Instructions:

To install this openSUSE Security Update use the SUSE recommended installation methods
like YaST online_update or “zypper patch”.

Alternatively you can run the command listed for your product:

• openSUSE Leap 15.0:

  zypper in -t patch openSUSE-2019-308=1