critical
9.8
CWE
416
Advisory Published
Updated

CVE-2018-18492: Use After Free

First published: Tue Dec 11 2018(Updated: )

A use-after-free vulnerability can occur after deleting a selection element due to a weak reference to the select element in the options collection. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox < 64.

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

Affected SoftwareAffected VersionHow to fix
Mozilla Thunderbird<60.4
60.4
Mozilla Firefox ESR<60.4
60.4
Mozilla Firefox<64
64
Mozilla Firefox<64.0
Mozilla Firefox ESR<60.4.0
Mozilla Thunderbird<60.4.0
Debian Debian Linux=8.0
Debian Debian Linux=9.0
Canonical Ubuntu Linux=14.04
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=18.10
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=7.6
Redhat Enterprise Linux Server Eus=7.6
Redhat Enterprise Linux Server Tus=7.6
Redhat Enterprise Linux Workstation=6.0
Redhat Enterprise Linux Workstation=7.0
ubuntu/firefox<64.0+
64.0+
ubuntu/firefox<64.0+
64.0+
ubuntu/firefox<64.0+
64.0+
ubuntu/firefox<64.0
64.0
ubuntu/firefox<64.0+
64.0+
ubuntu/thunderbird<1:60.4.0+
1:60.4.0+
ubuntu/thunderbird<1:60.4.0+
1:60.4.0+
ubuntu/thunderbird<1:60.4.0+
1:60.4.0+
ubuntu/thunderbird<60.4
60.4
ubuntu/thunderbird<1:60.4.0+
1:60.4.0+
debian/firefox
125.0.3-1
debian/firefox-esr
91.12.0esr-1~deb10u1
115.10.0esr-1~deb10u1
115.7.0esr-1~deb11u1
115.10.0esr-1~deb11u1
115.7.0esr-1~deb12u1
115.10.0esr-1~deb12u1
115.10.0esr-1
debian/thunderbird
1:91.12.0-1~deb10u1
1:115.10.1-1~deb10u1
1:115.7.0-1~deb11u1
1:115.10.1-1~deb11u1
1:115.7.0-1~deb12u1
1:115.10.1-1~deb12u1
1:115.10.1-1

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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-2018-18492?

    CVE-2018-18492 is a use-after-free vulnerability that can occur after deleting a selection element in Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox < 64.

  • How severe is CVE-2018-18492?

    CVE-2018-18492 has a severity rating of 9.8 out of 10.

  • Which software versions are affected by CVE-2018-18492?

    Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox < 64 are affected by CVE-2018-18492.

  • What is the remedy for CVE-2018-18492?

    The remedy for CVE-2018-18492 is to update Thunderbird to version 60.4 or later, Firefox ESR to version 60.4 or later, and Firefox to version 64 or later.

  • Where can I find more information about CVE-2018-18492?

    You can find more information about CVE-2018-18492 in the following references: [1] [2] [3].

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