CWE
79
Advisory Published

USN-3477-1: Firefox vulnerabilities

First published: Thu Nov 16 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 cause a denial of service, read uninitialized memory, obtain sensitive information, bypass same-origin restrictions, bypass CSP protections, bypass mixed content blocking, spoof the addressbar, or execute arbitrary code. (CVE-2017-7826, CVE-2017-7827, CVE-2017-7828, CVE-2017-7830, CVE-2017-7831, CVE-2017-7832, CVE-2017-7833, CVE-2017-7834, CVE-2017-7835, CVE-2017-7837, CVE-2017-7838, CVE-2017-7842) It was discovered that javascript: URLs pasted in to the addressbar would be executed instead of being blocked in some circumstances. If a user were tricked in to copying a specially crafted URL in to the addressbar, an attacker could potentially exploit this to conduct cross-site scripting (XSS) attacks. (CVE-2017-7839) It was discovered that exported bookmarks do not strip script elements from user-supplied tags. If a user were tricked in to adding specially crafted tags to bookmarks, exporting them and then opening the resulting HTML file, an attacker could potentially exploit this to conduct cross-site scripting (XSS) attacks. (CVE-2017-7840)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/firefox<57.0+build4-0ubuntu0.17.10.5
57.0+build4-0ubuntu0.17.10.5
=17.10
All of
ubuntu/firefox<57.0+build4-0ubuntu0.17.04.5
57.0+build4-0ubuntu0.17.04.5
=17.04
All of
ubuntu/firefox<57.0+build4-0ubuntu0.16.04.5
57.0+build4-0ubuntu0.16.04.5
=16.04
All of
ubuntu/firefox<57.0+build4-0ubuntu0.14.04.4
57.0+build4-0ubuntu0.14.04.4
=14.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-3477-1?

    The severity of USN-3477-1 is high.

  • How can an attacker exploit the vulnerabilities in USN-3477-1?

    An attacker can exploit the vulnerabilities by tricking a user into opening a specially crafted website.

  • What are the potential impacts of the vulnerabilities in USN-3477-1?

    The potential impacts include denial of service, reading uninitialized memory, obtaining sensitive information, bypassing same-origin restrictions, and bypassing CSP protections.

  • What is the affected software in USN-3477-1?

    The affected software in USN-3477-1 is Firefox.

  • How can I fix the vulnerabilities in USN-3477-1?

    To fix the vulnerabilities, update Firefox to version 57.0+build4-0ubuntu0.17.10.5 (for Ubuntu 17.10), 57.0+build4-0ubuntu0.17.04.5 (for Ubuntu 17.04), 57.0+build4-0ubuntu0.16.04.5 (for Ubuntu 16.04), or 57.0+build4-0ubuntu0.14.04.4 (for Ubuntu 14.04).

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