CWE
79
Advisory Published

USN-3991-1: Firefox vulnerabilities

First published: Tue May 21 2019(Updated: )

Multiple security issues were discovered 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, spoof the browser UI, trick the user in to launching local executable binaries, obtain sensitive information, conduct cross-site scripting (XSS) attacks, or execute arbitrary code. (CVE-2019-11691, CVE-2019-11692, CVE-2019-11693, CVE-2019-11695, CVE-2019-11696, CVE-2019-11699, CVE-2019-11701, CVE-2019-7317, CVE-2019-9800, CVE-2019-9814, CVE-2019-9817, CVE-2019-9819, CVE-2019-9820, CVE-2019-9821) It was discovered that pressing certain key combinations could bypass addon installation prompt delays. If a user opened a specially crafted website, an attacker could potentially exploit this to trick them in to installing a malicious extension. (CVE-2019-11697) It was discovered that history data could be exposed via drag and drop of hyperlinks to and from bookmarks. If a user were tricked in to dragging a specially crafted hyperlink to the bookmark toolbar or sidebar, and subsequently back in to the web content area, an attacker could potentially exploit this to obtain sensitive information. (CVE-2019-11698) A type confusion bug was discovered with object groups and UnboxedObjects. If a user were tricked in to opening a specially crafted website after enabling the UnboxedObjects feature, an attacker could potentially exploit this to bypass security checks. (CVE-2019-9816)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/firefox<67.0+build2-0ubuntu0.19.04.1
67.0+build2-0ubuntu0.19.04.1
Ubuntu Ubuntu=19.04
All of
ubuntu/firefox<67.0+build2-0ubuntu0.18.10.1
67.0+build2-0ubuntu0.18.10.1
Ubuntu Ubuntu=18.10
All of
ubuntu/firefox<67.0+build2-0ubuntu0.18.04.1
67.0+build2-0ubuntu0.18.04.1
Ubuntu Ubuntu=18.04
All of
ubuntu/firefox<67.0+build2-0ubuntu0.16.04.1
67.0+build2-0ubuntu0.16.04.1
Ubuntu Ubuntu=16.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID for this Firefox vulnerabilities?

    The vulnerability ID for this Firefox vulnerabilities is USN-3991-1.

  • What software is affected by this vulnerability?

    The software affected by this vulnerability is Firefox.

  • How can an attacker exploit this vulnerability?

    An attacker can potentially exploit this vulnerability by tricking a user into opening a specially crafted website.

  • What can an attacker potentially do if they exploit this vulnerability?

    If an attacker exploits this vulnerability, they can cause a denial of service, spoof the browser UI, trick the user into launching local executable binaries, and obtain sensitive information.

  • Where can I find more information about this vulnerability?

    You can find more information about this vulnerability on the Ubuntu Security Notices website. Here are the links: [CVE-2019-11691](https://ubuntu.com/security/CVE-2019-11691), [CVE-2019-11692](https://ubuntu.com/security/CVE-2019-11692), [CVE-2019-11693](https://ubuntu.com/security/CVE-2019-11693).

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