CWE
79
Advisory Published

USN-3435-1: Firefox vulnerabilities

First published: Mon Oct 02 2017(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 read uninitialized memory, obtain sensitive information, bypass phishing and malware protection, spoof the origin in modal dialogs, conduct cross-site scripting (XSS) attacks, cause a denial of service via application crash, or execute arbitrary code. (CVE-2017-7793, CVE-2017-7810, CVE-2017-7811, CVE-2017-7812, CVE-2017-7813, CVE-2017-7814, CVE-2017-7815, CVE-2017-7818, CVE-2017-7819, CVE-2017-7820, CVE-2017-7822, CVE-2017-7823, CVE-2017-7824) Martin Thomson discovered that NSS incorrectly generated handshake hashes. A remote attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code. (CVE-2017-7805) Multiple security issues were discovered in WebExtensions. If a user were tricked in to installing a specially crafted extension, an attacker could potentially exploit these to download and open non-executable files without interaction, or obtain elevated privileges. (CVE-2017-7816, CVE-2017-7821)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/firefox<56.0+build6-0ubuntu0.17.04.1
56.0+build6-0ubuntu0.17.04.1
=17.04
All of
ubuntu/firefox<56.0+build6-0ubuntu0.16.04.1
56.0+build6-0ubuntu0.16.04.1
=16.04
All of
ubuntu/firefox<56.0+build6-0ubuntu0.14.04.1
56.0+build6-0ubuntu0.14.04.1
=14.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-3435-1?

    The severity of USN-3435-1 is high.

  • How can an attacker exploit USN-3435-1?

    An attacker can potentially exploit USN-3435-1 by tricking a user into opening a specially crafted website.

  • What are the potential exploits of USN-3435-1?

    USN-3435-1 can be potentially exploited to read uninitialized memory, obtain sensitive information, bypass phishing and malware protection, and spoof the origin in modal dialogs.

  • Is there a fix available for USN-3435-1?

    Yes, a fix is available for USN-3435-1. Users should update their Firefox installation to version 56.0 or higher.

  • Where can I find more information about USN-3435-1?

    More information about USN-3435-1 can be found on the Ubuntu Security website.

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