critical
9.8
CWE
416
Advisory Published
CVE Published
Updated

CVE-2017-7818: Use After Free

First published: Thu Sep 28 2017(Updated: )

A use-after-free vulnerability can occur when manipulating arrays of Accessible Rich Internet Applications (ARIA) elements within containers through the DOM. This results in a potentially exploitable crash.

Credit: security@mozilla.org security@mozilla.org

Affected SoftwareAffected VersionHow to fix
Mozilla Firefox ESR<52.4
52.4
Mozilla Thunderbird<52.4
52.4
Mozilla Firefox<56
56
Redhat Enterprise Linux Desktop=6.0
Redhat Enterprise Linux Desktop=7.0
Redhat Enterprise Linux Server=6.0
Redhat Enterprise Linux Server=7.0
Redhat Enterprise Linux Server Aus=7.4
Redhat Enterprise Linux Server Eus=7.2
Redhat Enterprise Linux Server Eus=7.4
Redhat Enterprise Linux Server Eus=7.5
Redhat Enterprise Linux Workstation=6.0
Redhat Enterprise Linux Workstation=7.0
Debian Debian Linux=7.0
Debian Debian Linux=8.0
Debian Debian Linux=9.0
Mozilla Firefox<56.0
Mozilla Firefox ESR<52.4.0
Mozilla Thunderbird<52.4.0
debian/firefox
131.0.2-2
debian/firefox-esr
115.14.0esr-1~deb11u1
128.3.1esr-1~deb11u1
115.14.0esr-1~deb12u1
128.3.1esr-1~deb12u1
128.3.0esr-2
128.3.1esr-2
debian/thunderbird
1:115.12.0-1~deb11u1
1:115.16.0esr-1~deb11u1
1:115.12.0-1~deb12u1
1:115.16.0esr-1~deb12u1
1:128.2.0esr-1
1:128.3.0esr-1

Remedy

https://bugzilla.mozilla.org/show_bug.cgi?id=1363723

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is CVE-2017-7818?

    CVE-2017-7818 is a use-after-free vulnerability that occurs when manipulating arrays of Accessible Rich Internet Applications (ARIA) elements within containers through the DOM.

  • Which software is affected by CVE-2017-7818?

    CVE-2017-7818 affects Firefox versions < 56, Firefox ESR versions < 52.4, and Thunderbird versions < 52.4.

  • What is the severity of CVE-2017-7818?

    CVE-2017-7818 has a severity rating of 9.8 (Critical).

  • How can I fix CVE-2017-7818?

    To fix CVE-2017-7818, it is recommended to update Firefox to version 56 or later, Firefox ESR to version 52.4 or later, and Thunderbird to version 52.4 or later.

  • Where can I find more information about CVE-2017-7818?

    You can find more information about CVE-2017-7818 on Bugzilla (https://bugzilla.mozilla.org/show_bug.cgi?id=1363723), the Mozilla Security Advisories page (https://www.mozilla.org/en-US/security/advisories/mfsa2017-22/), and the SecurityFocus website (http://www.securityfocus.com/bid/101055).

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