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WebKitGTK+ and WPE WebKit Security Advisory WSA-2018-0007
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Michael Catanzaro
2018-09-29 00:17:40 UTC
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WebKitGTK+ and WPE WebKit Security Advisory WSA-2018-0007
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Date reported : September 26, 2018
Advisory ID : WSA-2018-0007
WebKitGTK+ Advisory URL :
https://webkitgtk.org/security/WSA-2018-0007.html
WPE WebKit Advisory URL :
https://wpewebkit.org/security/WSA-2018-0007.html
CVE identifiers : CVE-2018-4207, CVE-2018-4208, CVE-2018-4209,
CVE-2018-4210, CVE-2018-4212, CVE-2018-4213,
CVE-2018-4191, CVE-2018-4197, CVE-2018-4299,
CVE-2018-4306, CVE-2018-4309, CVE-2018-4311,
CVE-2018-4312, CVE-2018-4314, CVE-2018-4315,
CVE-2018-4316, CVE-2018-4317, CVE-2018-4318,
CVE-2018-4319, CVE-2018-4323, CVE-2018-4328,
CVE-2018-4358, CVE-2018-4359, CVE-2018-4361.

Several vulnerabilities were discovered in WebKitGTK+ and WPE WebKit.

CVE-2018-4207
Versions affected: WebKitGTK+ before 2.20.0.
Credit to Google OSS-Fuzz.
Unexpected interaction causes an ASSERT failure. This issue was
addressed with improved checks.

CVE-2018-4208
Versions affected: WebKitGTK+ before 2.20.0.
Credit to Google OSS-Fuzz.
Unexpected interaction causes an ASSERT failure. This issue was
addressed with improved checks.

CVE-2018-4209
Versions affected: WebKitGTK+ before 2.20.0.
Credit to Google OSS-Fuzz.
Unexpected interaction causes an ASSERT failure. This issue was
addressed with improved checks.

CVE-2018-4210
Versions affected: WebKitGTK+ before 2.20.0.
Credit to Google OSS-Fuzz.
Unexpected interaction with indexing types caused a failure. An
array indexing issue existed in the handling of a function in
JavaScriptCore. This issue was addressed with improved checks.

CVE-2018-4212
Versions affected: WebKitGTK+ before 2.20.0.
Credit to Google OSS-Fuzz.
Unexpected interaction causes an ASSERT failure. This issue was
addressed with improved checks.

CVE-2018-4213
Versions affected: WebKitGTK+ before 2.20.0.
Credit to Google OSS-Fuzz.
Unexpected interaction causes an ASSERT failure. This issue was
addressed with improved checks.

CVE-2018-4191
Versions affected: WebKitGTK+ and WPE WebKit before 2.22.0.
Credit to Google OSS-Fuzz.
Unexpected interaction causes an ASSERT failure. A memory corruption
issue was addressed with improved validation.

CVE-2018-4197
Versions affected: WebKitGTK+ and WPE WebKit before 2.22.0.
Credit to Ivan Fratric of Google Project Zero.
Processing maliciously crafted web content may lead to arbitrary
code execution. A use after free issue was addressed with improved
memory management.

CVE-2018-4299
Versions affected: WebKitGTK+ and WPE WebKit before 2.22.0.
Credit to Samuel Groβ (saelo) 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-2018-4306
Versions affected: WebKitGTK+ and WPE WebKit before 2.22.0.
Credit to Ivan Fratric of Google Project Zero.
Processing maliciously crafted web content may lead to arbitrary
code execution. A use after free issue was addressed with improved
memory management.

CVE-2018-4309
Versions affected: WebKitGTK+ and WPE WebKit before 2.22.0.
Credit to an anonymous researcher working with Trend Micro's Zero
Day Initiative.
A malicious website may be able to execute scripts in the context of
another website. A cross-site scripting issue existed in WebKit.
This issue was addressed with improved URL validation.

CVE-2018-4311
Versions affected: WebKitGTK+ and WPE WebKit before 2.22.0.
Credit to Erling Alf Ellingsen (@steike).
Cross-origin SecurityErrors includes the accessed frame’s origin.
The issue was addressed by removing origin information.

CVE-2018-4312
Versions affected: WebKitGTK+ and WPE WebKit before 2.22.0.
Credit to Ivan Fratric of Google Project Zero.
Processing maliciously crafted web content may lead to arbitrary
code execution. A use after free issue was addressed with improved
memory management.

CVE-2018-4314
Versions affected: WebKitGTK+ and WPE WebKit before 2.22.0.
Credit to Ivan Fratric of Google Project Zero.
Processing maliciously crafted web content may lead to arbitrary
code execution. A use after free issue was addressed with improved
memory management.

CVE-2018-4315
Versions affected: WebKitGTK+ and WPE WebKit before 2.22.0.
Credit to Ivan Fratric of Google Project Zero.
Processing maliciously crafted web content may lead to arbitrary
code execution. A use after free issue was addressed with improved
memory management.

CVE-2018-4316
Versions affected: WebKitGTK+ and WPE WebKit before 2.22.0.
Credit to crixer, Hanming Zhang (@4shitak4) of Qihoo 360 Vulcan
Team.
Processing maliciously crafted web content may lead to arbitrary
code execution. A memory corruption issue was addressed with
improved state management.

CVE-2018-4317
Versions affected: WebKitGTK+ and WPE WebKit before 2.22.0.
Credit to Ivan Fratric of Google Project Zero.
Processing maliciously crafted web content may lead to arbitrary
code execution. A use after free issue was addressed with improved
memory management.

CVE-2018-4318
Versions affected: WebKitGTK+ and WPE WebKit before 2.22.0.
Credit to Ivan Fratric of Google Project Zero.
Processing maliciously crafted web content may lead to arbitrary
code execution. A use after free issue was addressed with improved
memory management.

CVE-2018-4319
Versions affected: WebKitGTK+ and WPE WebKit before 2.22.0.
Credit to John Pettitt of Google.
A malicious website may cause unexepected cross-origin behavior. A
cross-origin issue existed with iframe elements. This was addressed
with improved tracking of security origins.

CVE-2018-4323
Versions affected: WebKitGTK+ and WPE WebKit before 2.22.0.
Credit to Ivan Fratric 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-2018-4328
Versions affected: WebKitGTK+ and WPE WebKit before 2.22.0.
Credit to Ivan Fratric 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-2018-4358
Versions affected: WebKitGTK+ and WPE WebKit before 2.22.0.
Credit to @phoenhex team (@bkth_ @5aelo @_niklasb) 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-2018-4359
Versions affected: WebKitGTK+ and WPE WebKit before 2.22.0.
Credit to Samuel Groß (@5aelo).
Processing maliciously crafted web content may lead to arbitrary
code execution. Multiple memory corruption issues were addressed
with improved memory handling.

CVE-2018-4361
Versions affected: WebKitGTK+ and WPE WebKit before 2.22.0.
Credit to Google OSS-Fuzz.
Unexpected interaction causes an ASSERT failure. A memory corruption
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,
September 26, 2018

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