Blink in Google Chrome prior to 56.0.2924.76 for Linux, Windows and Mac, and 56.0.2924.87 for Android, failed to properly enforce unsafe-inline content security policy, which allowed a remote attacker to bypass content security policy via a crafted HTML page.

This update updates QtWebEngine to a snapshot from the Qt 5.6 LTS (long-term support) branch. This is a snapshot of the QtWebEngine that will be included in the bugfix and security release Qt 5.6.3, but only the QtWebEngine component is included in this update.

The update fixes the following security issues in QtWebEngine 5.6.2:
CVE-2016-5133, CVE-2016-5147, CVE-2016-5153, CVE-2016-5155, CVE-2016-5161, CVE-2016-5166, CVE-2016-5170, CVE-2016-5171, CVE-2016-5172, CVE-2016-5181, CVE-2016-5185, CVE-2016-5186, CVE-2016-5187, CVE-2016-5188, CVE-2016-5192, CVE-2016-5198, CVE-2016-5205, CVE-2016-5207, CVE-2016-5208, CVE-2016-5214, CVE-2016-5215, CVE-2016-5221, CVE-2016-5222, CVE-2016-5224, CVE-2016-5225, CVE-2016-9650, CVE-2016-9651, CVE-2016-9652, CVE-2017-5006, CVE-2017-5007, CVE-2017-5008, CVE-2017-5009, CVE-2017-5010, CVE-2017-5012, CVE-2017-5015, CVE-2017-5016, CVE-2017-5017, CVE-2017-5019, CVE-2017-5023, CVE-2017-5024, CVE-2017-5025, CVE-2017-5026, CVE-2017-5027, CVE-2017-5029, CVE-2017-5033, CVE-2017-5037, CVE-2017-5044, CVE-2017-5046, CVE-2017-5047, CVE-2017-5048, CVE-2017-5049, CVE-2017-5050, CVE-2017-5051, CVE-2017-5059, CVE-2017-5061, CVE-2017-5062, CVE-2017-5065, CVE-2017-5067, CVE-2017-5069, CVE-2017-5070, CVE-2017-5071, CVE-2017-5075, CVE-2017-5076, CVE-2016-5078, CVE-2017-5083, and CVE-2017-5089.

Other important changes include :

  - Based on Chromium 49.0.2623.111 (the version used in     QtWebEngine 5.7.x) with security fixes from Chromium up     to version 59.0.3071.104. (5.6.2 was based on Chromium     45.0.2554.101 with security fixes from Chromium up to     version 52.0.2743.116.)

  - All other bug fixes from QtWebEngine 5.7.1 have been     backported.

See http://code.qt.io/cgit/qt/qtwebengine.git/tree/dist/changes-5.6.3?h=5.
6 for details. (Please note that at the time of this writing, not all security backports are listed in that file yet. The list above is accurate.)

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update updates QtWebEngine to the 5.9.0 release. QtWebEngine 5.9.0 is part of the Qt 5.9.0 release, but only the QtWebEngine component is included in this update.

The update fixes the following security issues in QtWebEngine 5.8.0:
CVE-2017-5006, CVE-2017-5007, CVE-2017-5008, CVE-2017-5009, CVE-2017-5010, CVE-2017-5011, CVE-2017-5012, CVE-2017-5013, CVE-2017-5014, CVE-2017-5015, CVE-2017-5016, CVE-2017-5017, CVE-2017-5018, CVE-2017-5019, CVE-2017-5020, CVE-2017-5021, CVE-2017-5022, CVE-2017-5023, CVE-2017-5024, CVE-2017-5025, CVE-2017-5026, CVE-2017-5027, CVE-2017-5029, CVE-2017-5032, CVE-2017-5033, CVE-2017-5034, CVE-2017-5036, CVE-2017-5039, CVE-2017-5040, CVE-2017-5044, CVE-2017-5045, CVE-2017-5046, CVE-2017-5052, CVE-2017-5053, CVE-2017-5055, CVE-2017-5057, CVE-2017-5058, CVE-2017-5059, CVE-2017-5060, CVE-2017-5061, CVE-2017-5062, CVE-2017-5065, CVE-2017-5066, CVE-2017-5067, CVE-2017-5068, and CVE-2017-5069.

Other important changes include :

  - Based on Chromium 56.0.2924.122 with security fixes from     Chromium up to version 58.0.3029.96. (5.8.0 was based on     Chromium 53.0.2785.148 with security fixes from Chromium     up to version 55.0.2883.75.)

  - [QTBUG-54650, QTBUG-59922] Accessibility is now disabled     by default on Linux, like it is in Chrome, due to poor     options for enabling it conditionally and its heavy     performance impact. Set the environment variable     `QTWEBENGINE_ENABLE_LINUX_ACCESSIBILITY` to enable it     again.

  - [QTBUG-56531] Enabled `filesystem:` protocol handler.

  - [QTBUG-57720] Optimized incremental scene-graph     rendering in particular for software rendering.

  - [QTBUG-60049] Enabled brotli support.

  - Many bug fixes, see     https://code.qt.io/cgit/qt/qtwebengine.git/tree/dist/cha     nges-5.9.0?h=5.9 for details.

In addition, this build includes a fix for https://bugreports.qt.io/browse/QTBUG-61521 , a binary incompatibility in QtWebEngine 5.9.0 compared to 5.8.0.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The version of Google Chrome installed on the remote macOS or Mac OS X host is prior to 56.0.2924.76. It is, therefore, affected by the following vulnerabilities :

  - A cross-site scripting (XSS) vulnerability exists in the     Document::shutdown() function in dom/Document.cpp due to     a failure to clear the owner's widget for a frame. An     unauthenticated, remote attacker can exploit this, via a     specially crafted request, to execute arbitrary script     code in a user's browser session. (CVE-2017-5006)

  - A cross-site scripting (XSS) vulnerability exists in the     Document::shutdown() function in dom/Document.cpp due to     a failure to properly suspend pages that are closing,     but not yet fully closed. An unauthenticated, remote     attacker can exploit this, via a specially crafted     request, to execute arbitrary script code in a user's     browser session. (CVE-2017-5007)

  - A cross-site scripting (XSS) vulnerability exists in the     compileAndRunPrivateScript() function in     PrivateScriptRunner.cpp due to a failure to properly     protect private scripts. An unauthenticated, remote     attacker can exploit this, via a specially crafted     request, to execute arbitrary script code in a user's     browser session. (CVE-2017-5008)

  - An out-of-bounds read error exists in the     UsingFlexibleMode() function in decoding_state.cc due to     improper handling of frames marked as using flexible     mode. An unauthenticated, remote attacker can exploit     this to execute arbitrary code. (CVE-2017-5009)

  - A cross-site scripting (XSS) vulnerability exists in     css/FontFace.cpp due to improper handling of FontFace     objects. An unauthenticated, remote attacker can exploit     this, via a specially crafted request, to execute     arbitrary script code in a user's browser session.
    (CVE-2017-5010)

  - An information disclosure vulnerability exists in the     Devtools component due to improper front-end URL     handling. An unauthenticated, remote attacker can     exploit this to disclose arbitrary files.
    (CVE-2017-5011)

  - A heap buffer overflow condition exists in Google V8 in     the SetupAllocatingData() function in objects.h that     occurs when failing to allocate array buffer contents.
    An unauthenticated, remote attacker can exploit this to     execute arbitrary code. (CVE-2017-5012)

  - A flaw exists in the ShouldFocusLocationBarByDefault()     function in ui/browser.cc that is triggered when     handling NTP navigations in non-selected tabs. An     unauthenticated, remote attacker can exploit this to     spoof the address. (CVE-2017-5013)

  - A heap buffer overflow condition exists in Google Skia     due to improper validation of user-supplied input. An     unauthenticated, remote attacker can exploit this to     execute arbitrary code. (CVE-2017-5014)

  - An unspecified flaw exists in Omnibox that allows an     unauthenticated, remote attacker to spoof the address.
    (CVE-2017-5015)

  - A flaw exists in the updateVisibleValidationMessage()     function in html/HTMLFormControlElement.cpp related to     the form validation bubble being displayed for invisible     pages. An unauthenticated, remote attacker can exploit     this to spoof the UI. (CVE-2017-5016)

  - An uninitialized memory access flaw exists in the webm     video processing implementation that allows an     unauthenticated, remote attacker to have an unspecified     impact. (CVE-2017-5017)

  - A cross-site scripting (XSS) vulnerability exists in the     App Launcher component due to a failure to properly     validate parameters. An unauthenticated, remote attacker     can exploit this, via a specially crafted request, to     execute arbitrary script code in a user's browser     session. (CVE-2017-5018)

  - A use-after-free error exists in the OnBeforeUnload()     function in render_frame_impl.cc. An unauthenticated,     remote attacker can exploit this to execute arbitrary     code. (CVE-2017-5019)

  - A cross-site scripting (XSS) vulnerability exists in     Blink due to a failure to properly validate input     related to chrome://downloads. An unauthenticated,     remote attacker can exploit this, via a specially     crafted request, to execute arbitrary script code in a     user's browser session. (CVE-2017-5020)

  - A use-after-free error exists in the Extensions     component. An unauthenticated, remote attacker can     exploit this to execute arbitrary code. (CVE-2017-5021)

  - A security bypass vulnerability exists in     frame/csp/ContentSecurityPolicy.cpp that allows an     unauthenticated, remote attacker to bypass the content     security policy (CSP). (CVE-2017-5022)

  - A type confusion flaw exists in the histogram collector     feature that is triggered when handling serialized     histograms. An unauthenticated remote attacker can     exploit this to crash the browser, resulting in a denial     of service condition. (CVE-2017-5023)

  - A heap buffer overflow condition exists in FFmpeg in the     mov_read_uuid() function in libavformat/mov.c due to     improper handling of overly long UUIDs. An     unauthenticated, remote attacker can exploit this to     cause a denial of service condition or the execution of     arbitrary code. (CVE-2017-5024)

  - A heap buffer overflow condition exists in FFmpeg in the     mov_read_hdlr() function in libavformat/mov.c due to     improper validation of user-supplied input when handling     titles. An unauthenticated, remote attacker can exploit     this to execute arbitrary code. (CVE-2017-5025)

  - An unspecified flaw exists that allows an     unauthenticated, remote attacker to spoof the UI.
    (CVE-2017-5026)

  - An unspecified flaw exists in Blink that allows an     unauthenticated, remote attacker to bypass the content     security policy. (CVE-2017-5027)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Google Chrome installed on the remote Windows host is prior to 56.0.2924.76. It is, therefore, affected by the following vulnerabilities :

  - A cross-site scripting (XSS) vulnerability exists in the     Document::shutdown() function in dom/Document.cpp due to     a failure to clear the owner's widget for a frame. An     unauthenticated, remote attacker can exploit this, via a     specially crafted request, to execute arbitrary script     code in a user's browser session. (CVE-2017-5006)

  - A cross-site scripting (XSS) vulnerability exists in the     Document::shutdown() function in dom/Document.cpp due to     a failure to properly suspend pages that are closing,     but not yet fully closed. An unauthenticated, remote     attacker can exploit this, via a specially crafted     request, to execute arbitrary script code in a user's     browser session. (CVE-2017-5007)

  - A cross-site scripting (XSS) vulnerability exists in the     compileAndRunPrivateScript() function in     PrivateScriptRunner.cpp due to a failure to properly     protect private scripts. An unauthenticated, remote     attacker can exploit this, via a specially crafted     request, to execute arbitrary script code in a user's     browser session. (CVE-2017-5008)

  - An out-of-bounds read error exists in the     UsingFlexibleMode() function in decoding_state.cc due to     improper handling of frames marked as using flexible     mode. An unauthenticated, remote attacker can exploit     this to execute arbitrary code. (CVE-2017-5009)

  - A cross-site scripting (XSS) vulnerability exists in     css/FontFace.cpp due to improper handling of FontFace     objects. An unauthenticated, remote attacker can exploit     this, via a specially crafted request, to execute     arbitrary script code in a user's browser session.
    (CVE-2017-5010)

  - An information disclosure vulnerability exists in the     Devtools component due to improper front-end URL     handling. An unauthenticated, remote attacker can     exploit this to disclose arbitrary files.
    (CVE-2017-5011)

  - A heap buffer overflow condition exists in Google V8 in     the SetupAllocatingData() function in objects.h that     occurs when failing to allocate array buffer contents.
    An unauthenticated, remote attacker can exploit this to     execute arbitrary code. (CVE-2017-5012)

  - A flaw exists in the ShouldFocusLocationBarByDefault()     function in ui/browser.cc that is triggered when     handling NTP navigations in non-selected tabs. An     unauthenticated, remote attacker can exploit this to     spoof the address. (CVE-2017-5013)

  - A heap buffer overflow condition exists in Google Skia     due to improper validation of user-supplied input. An     unauthenticated, remote attacker can exploit this to     execute arbitrary code. (CVE-2017-5014)

  - An unspecified flaw exists in Omnibox that allows an     unauthenticated, remote attacker to spoof the address.
    (CVE-2017-5015)

  - A flaw exists in the updateVisibleValidationMessage()     function in html/HTMLFormControlElement.cpp related to     the form validation bubble being displayed for invisible     pages. An unauthenticated, remote attacker can exploit     this to spoof the UI. (CVE-2017-5016)

  - An uninitialized memory access flaw exists in the webm     video processing implementation that allows an     unauthenticated, remote attacker to have an unspecified     impact. (CVE-2017-5017)

  - A cross-site scripting (XSS) vulnerability exists in the     App Launcher component due to a failure to properly     validate parameters. An unauthenticated, remote attacker     can exploit this, via a specially crafted request, to     execute arbitrary script code in a user's browser     session. (CVE-2017-5018)

  - A use-after-free error exists in the OnBeforeUnload()     function in render_frame_impl.cc. An unauthenticated,     remote attacker can exploit this to execute arbitrary     code. (CVE-2017-5019)

  - A cross-site scripting (XSS) vulnerability exists in     Blink due to a failure to properly validate input     related to chrome://downloads. An unauthenticated,     remote attacker can exploit this, via a specially     crafted request, to execute arbitrary script code in a     user's browser session. (CVE-2017-5020)

  - A use-after-free error exists in the Extensions     component. An unauthenticated, remote attacker can     exploit this to execute arbitrary code. (CVE-2017-5021)

  - A security bypass vulnerability exists in     frame/csp/ContentSecurityPolicy.cpp that allows an     unauthenticated, remote attacker to bypass the content     security policy (CSP). (CVE-2017-5022)

  - A type confusion flaw exists in the histogram collector     feature that is triggered when handling serialized     histograms. An unauthenticated remote attacker can     exploit this to crash the browser, resulting in a denial     of service condition. (CVE-2017-5023)

  - A heap buffer overflow condition exists in FFmpeg in the     mov_read_uuid() function in libavformat/mov.c due to     improper handling of overly long UUIDs. An     unauthenticated, remote attacker can exploit this to     cause a denial of service condition or the execution of     arbitrary code. (CVE-2017-5024)

  - A heap buffer overflow condition exists in FFmpeg in the     mov_read_hdlr() function in libavformat/mov.c due to     improper validation of user-supplied input when handling     titles. An unauthenticated, remote attacker can exploit     this to execute arbitrary code. (CVE-2017-5025)

  - An unspecified flaw exists that allows an     unauthenticated, remote attacker to spoof the UI.
    (CVE-2017-5026)

  - An unspecified flaw exists in Blink that allows an     unauthenticated, remote attacker to bypass the content     security policy. (CVE-2017-5027)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
101920	Fedora 24 : qt5-qtwebengine (2017-98bed96d12)	Nessus	Fedora Local Security Checks	critical
101740	Fedora 26 : qt5-qtwebengine (2017-e83c26a8c9)	Nessus	Fedora Local Security Checks	critical
101504	Fedora 25 : qt5-qtwebengine (2017-58cde32413)	Nessus	Fedora Local Security Checks	critical
96829	Google Chrome < 56.0.2924.76 Multiple Vulnerabilities (macOS)	Nessus	MacOS X Local Security Checks	medium
96828	Google Chrome < 56.0.2924.76 Multiple Vulnerabilities	Nessus	Windows	medium

Detections

Analytics

CVE-2017-5027

medium

Tenable Plugins

critical

critical

critical

medium

medium