WebKitGTK and WPE WebKit Security Advisory WSA-2021-0003

• Date Reported: March 29, 2021

• Advisory ID: WSA-2021-0003

• CVE identifiers: CVE-2021-1788, CVE-2021-1844, CVE-2021-1871.

Several vulnerabilities were discovered in WebKitGTK and WPE WebKit.

• CVE-2021-1788
  • Versions affected: WebKitGTK before 2.32.0 and WPE WebKit before 2.32.0.
  • Credit to Francisco Alonso (@revskills).
  • Impact: Processing maliciously crafted web content may lead to arbitrary code execution. Description: 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.
  • Credit to Clément Lecigne of Google’s Threat Analysis Group, Alison Huffman of Microsoft Browser Vulnerability Research.
  • Impact: Processing maliciously crafted web content may lead to arbitrary code execution. Description: 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.
  • Credit to an anonymous researcher.
  • Impact: A remote attacker may be able to cause arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited. Description: A logic issue was addressed with improved restrictions.

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/.