WebKitGTK+ and WPE WebKit Security Advisory WSA-2018-0006

[Michael Catanzaro <mcatanzaro igalia com>]

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WebKitGTK+ and WPE WebKit Security Advisory                WSA-2018-0006
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Date reported           : August 07, 2018
Advisory ID             : WSA-2018-0006
WebKitGTK+ Advisory URL : 
https://webkitgtk.org/security/WSA-2018-0006.html
WPE WebKit Advisory URL : 
https://wpewebkit.org/security/WSA-2018-0006.html
CVE identifiers         : CVE-2018-4246, CVE-2018-4261, CVE-2018-4262,
                         CVE-2018-4263, CVE-2018-4264, CVE-2018-4265,
                         CVE-2018-4266, CVE-2018-4267, CVE-2018-4270,
                         CVE-2018-4271, CVE-2018-4272, CVE-2018-4273,
                         CVE-2018-4278, CVE-2018-4284, CVE-2018-12911.

Several vulnerabilities were discovered in WebKitGTK+ and WPE WebKit.

CVE-2018-4246
   Versions affected: WebKitGTK+ before 2.20.4 and WPE WebKit before
   2.20.1.
   Credit to OSS-Fuzz.
   Processing maliciously crafted web content may lead to arbitrary
   code execution. A type confusion issue was addressed with improved
   memory handling.

CVE-2018-4261
   Versions affected: WebKitGTK+ before 2.20.4 and WPE WebKit before
   2.20.2.
   Credit to Omair working with Trend Micro's Zero Day Initiative.
   Processing maliciously crafted web content may lead to arbitrary
   code execution. A memory corruption issue was addressed with
   improved memory handling.

CVE-2018-4262
   Versions affected: WebKitGTK+ before 2.20.4 and WPE WebKit before
   2.20.2.
   Credit to Mateusz Krzywicki working with Trend Micro's Zero Day
   Initiative.
   Processing maliciously crafted web content may lead to arbitrary
   code execution. A memory corruption issue was addressed with
   improved memory handling.

CVE-2018-4263
   Versions affected: WebKitGTK+ before 2.20.4 and WPE WebKit before
   2.20.2.
   Credit to Arayz working with Trend Micro's Zero Day Initiative.
   Processing maliciously crafted web content may lead to arbitrary
   code execution. A memory corruption issue was addressed with
   improved memory handling.

CVE-2018-4264
   Versions affected: WebKitGTK+ before 2.20.4 and WPE WebKit before
   2.20.2.
   Credit to OSS-Fuzz, Yu Zhou and Jundong Xie of Ant-financial Light-
   Year Security Lab.
   Processing maliciously crafted web content may lead to arbitrary
   code execution. A memory corruption issue was addressed with
   improved memory handling.

CVE-2018-4265
   Versions affected: WebKitGTK+ before 2.20.4 and WPE WebKit before
   2.20.2.
   Credit to cc working with Trend Micro's Zero Day Initiative.
   Processing maliciously crafted web content may lead to arbitrary
   code execution. A memory corruption issue was addressed with
   improved memory handling.

CVE-2018-4266
   Versions affected: WebKitGTK+ before 2.20.4 and WPE WebKit before
   2.20.2.
   Credit to OSS-Fuzz.
   A malicious website may be able to cause a denial of service. A race
   condition was addressed with additional validation.

CVE-2018-4267
   Versions affected: WebKitGTK+ before 2.20.4 and WPE WebKit before
   2.20.2.
   Credit to Arayz of Pangu team working with Trend Micro's Zero Day
   Initiative.
   Processing maliciously crafted web content may lead to arbitrary
   code execution. A memory corruption issue was addressed with
   improved memory handling.

CVE-2018-4270
   Versions affected: WebKitGTK+ before 2.20.4 and WPE WebKit before
   2.20.2.
   Credit to OSS-Fuzz.
   Processing maliciously crafted web content may lead to an unexpected
   application crash. A memory corruption issue was addressed with
   improved memory handling.

CVE-2018-4271
   Versions affected: WebKitGTK+ before 2.20.2.
   Credit to OSS-Fuzz.
   Processing maliciously crafted web content may lead to an unexpected
   application crash. A memory corruption issue was addressed with
   improved input validation.

CVE-2018-4272
   Versions affected: WebKitGTK+ before 2.20.4 and WPE WebKit before
   2.20.2.
   Credit to OSS-Fuzz.
   Processing maliciously crafted web content may lead to arbitrary
   code execution. A memory corruption issue was addressed with
   improved memory handling.

CVE-2018-4273
   Versions affected: WebKitGTK+ before 2.20.4 and WPE WebKit before
   2.20.2.
   Credit to OSS-Fuzz.
   Processing maliciously crafted web content may lead to an unexpected
   application crash. A memory corruption issue was addressed with
   improved input validation.

CVE-2018-4278
   Versions affected: WebKitGTK+ before 2.20.4 and WPE WebKit before
   2.20.2.
   Credit to Jun Kokatsu (@shhnjk).
   A malicious website may exfiltrate audio data cross-origin. Sound
   fetched through audio elements may be exfiltrated cross-origin. This
   issue was addressed with improved audio taint tracking.

CVE-2018-4284
   Versions affected: WebKitGTK+ before 2.20.4 and WPE WebKit before
   2.20.2.
   Credit to OSS-Fuzz.
   Processing maliciously crafted web content may lead to arbitrary
   code execution. A type confusion issue was addressed with improved
   memory handling.

CVE-2018-12911
   Versions affected: WebKitGTK+ before 2.20.4 and WPE WebKit before
   2.20.2.
   Credit to Yu Haiwan.
   Processing maliciously crafted web content may lead to arbitrary
   code execution. A buffer overflow issue was 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/.

The WebKitGTK+ and WPE WebKit team,
August 07, 2018