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Ubuntu Security Notice USN-2770-2
October 22, 2015

oxide-qt vulnerabilities
============================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 15.10

Summary:

Several security issues were fixed in Oxide.

Software Description:
- oxide-qt: Web browser engine library for Qt (QML plugin)

Details:

USN-2770-1 fixed vulnerabilities in Oxide in Ubuntu 14.04 LTS and Ubuntu
15.04. This update provides the corresponding updates for Ubuntu 15.10.

Original advisory details:

 It was discovered that ContainerNode::parserInsertBefore in Blink would
 incorrectly proceed with a DOM tree insertion in some circumstances. If a
 user were tricked in to opening a specially crafted website, an attacker
 could potentially exploit this to bypass same origin restrictions.
 (CVE-2015-6755)
 
 A use-after-free was discovered in the service worker implementation in
 Chromium. If a user were tricked in to opening a specially crafted
 website, an attacker could potentially exploit this to cause a denial of
 service via application crash, or execute arbitrary code with the
 privileges of the user invoking the program. (CVE-2015-6757)
 
 It was discovered that Blink did not ensure that the origin of
 LocalStorage resources are considered unique. If a user were tricked in to
 opening a specially crafted website, an attacker could potentially exploit
 this to obtain sensitive information. (CVE-2015-6759)
 
 A race condition and memory corruption was discovered in FFmpeg. If a user
 were tricked in to opening a specially crafted website, an attacker could
 potentially exploit this to cause a denial of service via renderer crash,
 or execute arbitrary code with the privileges of the sandboxed render
 process. (CVE-2015-6761)
 
 It was discovered that CSSFontFaceSrcValue::fetch in Blink did not use
 CORS in some circumstances. If a user were tricked in to opening a
 specially crafted website, an attacker could potentially exploit this to
 bypass same origin restrictions. (CVE-2015-6762)
 
 Multiple security issues were discovered in Chromium. If a user were
 tricked in to opening a specially crafted website, an attacker could
 potentially exploit these to read uninitialized memory, cause a denial
 of service via application crash or execute arbitrary code with the
 privileges of the user invoking the program. (CVE-2015-6763)
 
 Multiple security issues were discovered in V8. If a user were tricked
 in to opening a specially crafted website, an attacker could potentially
 exploit these to read uninitialized memory, cause a denial of service via
 renderer crash or execute arbitrary code with the privileges of the
 sandboxed render process. (CVE-2015-7834)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 15.10:
  liboxideqtcore0                 1.10.3-0ubuntu0.15.10.1

In general, a standard system update will make all the necessary changes.

References:
  http://www.ubuntu.com/usn/usn-2770-2
  http://www.ubuntu.com/usn/usn-2770-1
  CVE-2015-6755, CVE-2015-6757, CVE-2015-6759, CVE-2015-6761,
  CVE-2015-6762, CVE-2015-6763, CVE-2015-7834

Package Information:
  https://launchpad.net/ubuntu/+source/oxide-qt/1.10.3-0ubuntu0.15.10.1