Firefox could be made to crash or run programs as your login if it opened a malicious website.
Christian Holler, Andrew McCreight, Dan Minor, Tyson Smith, Jon Coppeard, Jan-Ivar Bruaroey, Jesse Ruderman, Markus Stange, Olli Pettay, Ehsan Akhgari, Gary Kwong, Tooru Fujisawa, and Randell Jesup discovered multiple memory safety issues in Firefox. 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 application crash, or execute arbitrary code. (CVE-2016-5289, CVE-2016-5290)
19 November 2016
A security issue affects these releases of Ubuntu and its derivatives:
Firefox could be made to crash or run programs as your login if it opened a malicious website.
Christian Holler, Andrew McCreight, Dan Minor, Tyson Smith, Jon Coppeard, Jan-Ivar Bruaroey, Jesse Ruderman, Markus Stange, Olli Pettay, Ehsan Akhgari, Gary Kwong, Tooru Fujisawa, and Randell Jesup discovered multiple memory safety issues in Firefox. 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 application crash, or execute arbitrary code. (CVE-2016-5289, CVE-2016-5290)
A same-origin policy bypass was discovered with local HTML files in some circumstances. An attacker could potentially exploit this to obtain sensitive information. (CVE-2016-5291)
A crash was discovered when parsing URLs in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to execute arbitrary code. (CVE-2016-5292)
A heap buffer-overflow was discovered in Cairo when processing SVG content. 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. (CVE-2016-5296)
An error was discovered in argument length checking in Javascript. 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. (CVE-2016-5297)
An integer overflow was discovered in the Expat library. 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. (CVE-2016-9063)
It was discovered that addon updates failed to verify that the addon ID inside the signed package matched the ID of the addon being updated. An attacker that could perform a man-in-the-middle (MITM) attack could potentially exploit this to provide malicious addon updates. (CVE-2016-9064)
A buffer overflow was discovered in nsScriptLoadHandler. 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. (CVE-2016-9066)
2 use-after-free bugs were discovered during DOM operations in some circumstances. 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 application crash, or execute arbitrary code. (CVE-2016-9067, CVE-2016-9069)
A heap use-after-free was discovered during web animations in some circumstances. 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. (CVE-2016-9068)
It was discovered that a page loaded in to the sidebar through a bookmark could reference a privileged chrome window. An attacker could potentially exploit this to bypass same origin restrictions. (CVE-2016-9070)
An issue was discovered with Content Security Policy (CSP) in combination with HTTP to HTTPS redirection. An attacker could potentially exploit this to verify whether a site is within the user’s browsing history. (CVE-2016-9071)
An issue was discovered with the windows.create() WebExtensions API. If a user were tricked in to installing a malicious extension, an attacker could potentially exploit this to escape the WebExtensions sandbox. (CVE-2016-9073)
It was discovered that WebExtensions can use the mozAddonManager API. An attacker could potentially exploit this to install additional extensions without user permission. (CVE-2016-9075)
It was discovered that <select> element dropdown menus can cover location bar content when e10s is enabled. An attacker could potentially exploit this to conduct UI spoofing attacks. (CVE-2016-9076)
It was discovered that canvas allows the use of the feDisplacementMap filter on cross-origin images. An attacker could potentially exploit this to conduct timing attacks. (CVE-2016-9077)
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to restart Firefox to make all the necessary changes.
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