high
8.8
CWE
416
Advisory Published
CVE Published
Updated

CVE-2018-12363: Use After Free

First published: Tue Jun 26 2018(Updated: )

A use-after-free vulnerability can occur when script uses mutation events to move DOM nodes between documents, resulting in the old document that held the node being freed but the node still having a pointer referencing it. This results in a potentially exploitable crash.

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

Affected SoftwareAffected VersionHow to fix
Red Hat Enterprise Linux Desktop=6.0
Red Hat Enterprise Linux Desktop=7.0
Red Hat Enterprise Linux Server=6.0
Red Hat Enterprise Linux Server=7.0
Red Hat Enterprise Linux Server=7.6
Red Hat Enterprise Linux Server=7.5
Red Hat Enterprise Linux Server=7.6
Red Hat Enterprise Linux Server=7.6
Red Hat Enterprise Linux Workstation=6.0
Red Hat Enterprise Linux Workstation=7.0
Debian=8.0
Debian=9.0
Ubuntu=14.04
Ubuntu=16.04
Ubuntu=17.10
Ubuntu=18.04
Firefox<61.0
Firefox>=53.0<60.1.0
Firefox ESR<52.9
Thunderbird<52.9
Thunderbird>=52.9.1<60.0
Firefox ESR>=53.0<60.1.0
Thunderbird<60
60
Thunderbird<52.9
52.9
Firefox<61
61
Firefox ESR<60.1
60.1
Firefox ESR<52.9
52.9
debian/firefox
135.0.1-1
debian/firefox-esr
115.14.0esr-1~deb11u1
128.7.0esr-1~deb11u1
128.5.0esr-1~deb12u1
128.7.0esr-1~deb12u1
128.7.0esr-1
debian/thunderbird
1:115.12.0-1~deb11u1
1:128.7.0esr-1~deb11u1
1:128.5.0esr-1~deb12u1
1:128.7.0esr-1~deb12u1
1:128.7.0esr-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 the severity of CVE-2018-12363?

    CVE-2018-12363 is classified as a high-severity use-after-free vulnerability.

  • How do I fix CVE-2018-12363?

    To fix CVE-2018-12363, update affected software like Mozilla Firefox or Thunderbird to the latest versions.

  • Which versions of software are affected by CVE-2018-12363?

    CVE-2018-12363 affects Mozilla Thunderbird versions up to 60, Firefox ESR versions up to 60.1, and Firefox versions up to 61.

  • What types of exploitation are possible with CVE-2018-12363?

    Exploitation of CVE-2018-12363 could lead to potential crashes and unauthorized access due to use-after-free conditions.

  • Is CVE-2018-12363 still a risk if my software is updated?

    If your software has been updated to a secure version, the risk associated with CVE-2018-12363 is mitigated.

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