USN-2920-1: Oxide vulnerabilities

10 March 2016

oxide-qt vulnerabilities

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

  • Ubuntu 15.10
  • Ubuntu 14.04 LTS

Summary

Several security issues were fixed in Oxide.

Software Description

  • oxide-qt - Web browser engine for Qt (QML plugin)

Details

It was discovered that the ContainerNode::parserRemoveChild function in Blink mishandled widget updates 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-2016-1630)

It was discovered that the PPB_Flash_MessageLoop_Impl::InternalRun function in Chromium mishandled nested message loops. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to bypass same-origin restrictions. (CVE-2016-1631)

Multiple use-after-frees were discovered in Blink. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service via renderer crash or execute arbitrary code with the privileges of the sandboxed render process. (CVE-2016-1633, CVE-2016-1634, CVE-2016-1644)

It was discovered that the PendingScript::notifyFinished function in Blink relied on memory-cache information about integrity-check occurrences instead of integrity-check successes. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to bypass Subresource Integrity (SRI) protections. (CVE-2016-1636)

It was discovered that the SkATan2_255 function in Skia mishandled arctangent calculations. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to obtain sensitive information. (CVE-2016-1637)

A use-after-free was discovered 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-2016-1641)

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-2016-1642)

A type-confusion bug was discovered in Blink. 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-2016-1643)

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-2016-2843)

An invalid cast was discovered in Blink. 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-2016-2844)

It was discovered that the Content Security Policy (CSP) implementation in Blink did not ignore a URL’s path component in the case of a ServiceWorker fetch. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to obtain sensitive information. (CVE-2016-2845)

Update instructions

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

Ubuntu 15.10
liboxideqtcore0 - 1.13.6-0ubuntu0.15.10.1
Ubuntu 14.04 LTS
liboxideqtcore0 - 1.13.6-0ubuntu0.14.04.1

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References