WebKitGTK+ and WPE WebKit Security Advisory WSA-2018-0008

• Date Reported: November 21, 2018

• Advisory ID: WSA-2018-0008

• CVE identifiers: CVE-2018-4345, CVE-2018-4372, CVE-2018-4373, CVE-2018-4375, CVE-2018-4376, CVE-2018-4378, CVE-2018-4382, CVE-2018-4386, CVE-2018-4392, CVE-2018-4416.

Several vulnerabilities were discovered in WebKitGTK+ and WPE WebKit.

• CVE-2018-4345

  • Versions affected: WebKitGTK+ before 2.22.3 and WPE WebKit before 2.22.1.
  • Credit to an anonymous researcher.
  • A cross-site scripting issue existed in WebKit. This issue was addressed with improved URL validation.

• CVE-2018-4372

  • Versions affected: WebKitGTK+ before 2.22.4 and WPE WebKit before 2.22.2.
  • Credit to HyungSeok Han, DongHyeon Oh, and Sang Kil Cha of KAIST Softsec Lab, Korea.
  • Processing maliciously crafted web content may lead to arbitrary code execution. Multiple memory corruption issues were addressed with improved memory handling.

• CVE-2018-4373

  • Versions affected: WebKitGTK+ and WPE WebKit before 2.22.0.
  • Credit to ngg, alippai, DirtYiCE, KT of Tresorit working with Trend Micro’s Zero Day Initiative.
  • Processing maliciously crafted web content may lead to arbitrary code execution. Multiple memory corruption issues were addressed with improved memory handling.

• CVE-2018-4375

  • Versions affected: WebKitGTK+ before 2.22.1 and WPE WebKit before 2.22.0.
  • Credit to Yu Haiwan and Wu Hongjun From Nanyang Technological University working with Trend Micro’s Zero Day Initiative.
  • Processing maliciously crafted web content may lead to arbitrary code execution. Multiple memory corruption issues were addressed with improved memory handling.

• CVE-2018-4376

  • Versions affected: WebKitGTK+ before 2.22.1 and WPE WebKit before 2.22.0.
  • Credit to 010 working with Trend Micro’s Zero Day Initiative.
  • Processing maliciously crafted web content may lead to arbitrary code execution. Multiple memory corruption issues were addressed with improved memory handling.

• CVE-2018-4378

  • Versions affected: WebKitGTK+ before 2.22.1 and WPE WebKit before 2.22.0.
  • Credit to an anonymous researcher, zhunki of 360 ESG Codesafe Team.
  • Processing maliciously crafted web content may lead to code execution. A memory corruption issue was addressed with improved validation.

• CVE-2018-4382

  • Versions affected: WebKitGTK+ before 2.22.1 and WPE WebKit before 2.22.0.
  • Credit to lokihardt of Google Project Zero.
  • Processing maliciously crafted web content may lead to arbitrary code execution. Multiple memory corruption issues were addressed with improved memory handling.

• CVE-2018-4386

  • Versions affected: WebKitGTK+ before 2.22.3 and WPE WebKit before 2.22.1.
  • Credit to lokihardt of Google Project Zero.
  • Processing maliciously crafted web content may lead to arbitrary code execution. Multiple memory corruption issues were addressed with improved memory handling.

• CVE-2018-4392

  • Versions affected: WebKitGTK+ before 2.22.1 and WPE WebKit before 2.22.0.
  • Credit to zhunki of 360 ESG Codesafe Team.
  • Processing maliciously crafted web content may lead to arbitrary code execution. Multiple memory corruption issues were addressed with improved memory handling.

• CVE-2018-4416

  • Versions affected: WebKitGTK+ before 2.22.1 and WPE WebKit before 2.22.0.
  • Credit to lokihardt of Google Project Zero.
  • Processing maliciously crafted web content may lead to arbitrary code execution. Multiple memory corruption issues were addressed with improved memory handling.

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/.