webkit2gtk: Multiple vulnerabilities (CVE-2021-1788, CVE-2021-1844, CVE-2021-1871)

CVE-2021-1788

• Versions affected: WebKitGTK before 2.32.0 and WPE WebKit before 2.32.0.
• Processing maliciously crafted web content may lead to arbitrary code execution.
• A use after free issue was addressed with improved memory management.

CVE-2021-1844

• Versions affected: WebKitGTK before 2.32.0 and WPE WebKit before 2.32.0.
• Processing maliciously crafted web content may lead to arbitrary code execution.
• A memory corruption issue was addressed with improved validation.

CVE-2021-1871

• Versions affected: WebKitGTK before 2.32.0 and WPE WebKit before 2.32.0.
• A remote attacker may be able to cause arbitrary code execution.

Reference:

https://webkitgtk.org/security/WSA-2021-0003.html

Affected branches:

• master
• 3.13-stable