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OpenAdvisories
Unscored USN-2936-1 10 CVEs

firefox vulnerabilities

Published Apr 27, 2016 · Updated Apr 22, 2026

Summary

Christian Holler, Tyson Smith, Phil Ringalda, Gary Kwong, Jesse Ruderman,
Mats Palmgren, Carsten Book, Boris Zbarsky, David Bolter, Randell Jesup,
Andrew McCreight, and Steve Fink 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 with the
privileges of the user invoking Firefox. (CVE-2016-2804, CVE-2016-2806,
CVE-2016-2807)

An invalid write was discovered when using the JavaScript .watch() method 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 with the
privileges of the user invoking Firefox. (CVE-2016-2808)

Looben Yang discovered a use-after-free and buffer overflow in service
workers. 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 with the privileges of
the user invoking Firefox. (CVE-2016-2811, CVE-2016-2812)

Sascha Just discovered a buffer overflow in libstagefright 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 with the
privileges of the user invoking Firefox. (CVE-2016-2814)

Muneaki Nishimura discovered that CSP is not applied correctly to web
content sent with the multipart/x-mixed-replace MIME type. An attacker
could potentially exploit this to conduct cross-site scripting (XSS)
attacks when they would otherwise be prevented. (CVE-2016-2816)

Muneaki Nishimura discovered that the chrome.tabs.update API for web
extensions allows for navigation to javascript: URLs. A malicious
extension could potentially exploit this to conduct cross-site scripting
(XSS) attacks. (CVE-2016-2817)

Mark Goodwin discovered that about:healthreport accepts certain events
from any content present in the remote-report iframe. If another
vulnerability allowed the injection of web content in the remote-report
iframe, an attacker could potentially exploit this to change the user's
sharing preferences. (CVE-2016-2820)

Fixed packages 2

ReleasePackageFixed in
Ubuntu · 14.04 LTS 14.04:LTS firefox 46.0+build5-0ubuntu0.14.04.2
Ubuntu · 16.04 LTS 16.04:LTS firefox 46.0+build5-0ubuntu0.16.04.2

Vulnerabilities 10

  • Unscored —

    Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 46.0 allow remote attackers to cau…

  • Unscored —

    Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 46.0 and Firefox ESR 45.x before 4…

  • Unscored —

    Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 46.0, Firefox ESR 38.x before 38.8…

  • Unscored —

    The watch implementation in the JavaScript engine in Mozilla Firefox before 46.0, Firefox ESR 38.x before 38.8, and Fir…

  • Unscored —

    Use-after-free vulnerability in the ServiceWorkerInfo class in the Service Worker subsystem in Mozilla Firefox before 4…

  • Unscored —

    Race condition in the get implementation in the ServiceWorkerManager class in the Service Worker subsystem in Mozilla F…

  • Unscored —

    Heap-based buffer overflow in the stagefright::SampleTable::parseSampleCencInfo function in libstagefright in Mozilla F…

  • Unscored —

    Mozilla Firefox before 46.0 allows remote attackers to bypass the Content Security Policy (CSP) protection mechanism vi…

  • Unscored —

    The WebExtension sandbox feature in browser/components/extensions/ext-tabs.js in Mozilla Firefox before 46.0 does not p…

  • Unscored —

    The Firefox Health Reports (aka FHR or about:healthreport) feature in Mozilla Firefox before 46.0 does not properly res…

References

  • report
    https://ubuntu.com/security/CVE-2016-2804
  • report
    https://ubuntu.com/security/CVE-2016-2806
  • report
    https://ubuntu.com/security/CVE-2016-2807
  • report
    https://ubuntu.com/security/CVE-2016-2808
  • report
    https://ubuntu.com/security/CVE-2016-2811
  • report
    https://ubuntu.com/security/CVE-2016-2812
  • report
    https://ubuntu.com/security/CVE-2016-2814
  • report
    https://ubuntu.com/security/CVE-2016-2816
  • report
    https://ubuntu.com/security/CVE-2016-2817
  • report
    https://ubuntu.com/security/CVE-2016-2820