CVE-2018-12363: Use After Free

Published 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.

Affected Software

30 affected componentsFixes available
Mozilla Thunderbird<60
60
Mozilla Thunderbird<52.9
52.9
Mozilla Firefox<61
61
Mozilla Firefox ESR<60.1
60.1
Mozilla Firefox ESR<52.9
52.9
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=7.5
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
Debian Debian Linux=8.0
Debian Debian Linux=9.0
Canonical Ubuntu Linux=14.04
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=17.10
Canonical Ubuntu Linux=18.04
Mozilla Firefox<61.0
Mozilla Firefox>=53.0<60.1.0
Mozilla Firefox ESR<52.9
Mozilla Thunderbird<52.9
Mozilla Thunderbird>=52.9.1<60.0
Mozilla Firefox ESR>=53.0<60.1.0
debian/firefox
147.0.4-1
debian/firefox-esr
115.14.0esr-1~deb11u1140.7.0esr-1~deb11u1128.14.0esr-1~deb12u1140.7.0esr-1~deb12u1140.4.0esr-1~deb13u1140.7.0esr-1~deb13u1140.7.0esr-1
debian/thunderbird
1:115.12.0-1~deb11u11:140.7.1esr-1~deb11u11:140.6.0esr-1~deb12u11:140.7.1esr-1~deb12u11:140.6.0esr-1~deb13u11:140.7.1esr-1~deb13u11:140.7.1esr-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade Thunderbird to a version that resolves this vulnerability.

    Fixed in 60
  2. Upgrade

    Upgrade Thunderbird to a version that resolves this vulnerability.

    Fixed in 52.9
  3. Upgrade

    Upgrade Firefox to a version that resolves this vulnerability.

    Fixed in 61
  4. Upgrade

    Upgrade Firefox ESR to a version that resolves this vulnerability.

    Fixed in 60.1
  5. Upgrade

    Upgrade Firefox ESR to a version that resolves this vulnerability.

    Fixed in 52.9
  6. Upgrade

    Upgrade debian/firefox to a version that resolves this vulnerability.

    Fixed in 147.0.4-1
  7. Upgrade

    Upgrade debian/firefox-esr to a version that resolves this vulnerability.

    Fixed in 115.14.0esr-1~deb11u1Fixed in 140.7.0esr-1~deb11u1Fixed in 128.14.0esr-1~deb12u1Fixed in 140.7.0esr-1~deb12u1Fixed in 140.4.0esr-1~deb13u1Fixed in 140.7.0esr-1~deb13u1Fixed in 140.7.0esr-1
  8. Upgrade

    Upgrade debian/thunderbird to a version that resolves this vulnerability.

    Fixed in 1:115.12.0-1~deb11u1Fixed in 1:140.7.1esr-1~deb11u1Fixed in 1:140.6.0esr-1~deb12u1Fixed in 1:140.7.1esr-1~deb12u1Fixed in 1:140.6.0esr-1~deb13u1Fixed in 1:140.7.1esr-1~deb13u1Fixed in 1:140.7.1esr-1
  9. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 60
  10. Upgrade

    Upgrade Mozilla Thunderbird to a version that resolves this vulnerability.

    Fixed in 60
  11. Upgrade

    Upgrade Mozilla Thunderbird to a version that resolves this vulnerability.

    Fixed in 52.9

Event History

Jun 26, 2018
CVE Published
via Mozilla·12:00 AM
Data Sourced
via Red Hat·01:52 AM
DescriptionSeverityAffected Software
Aug 23, 2018
Data Sourced
via Mozilla·12:00 AM
DescriptionSeverityAffected Software
Oct 18, 2018
CVE Published
via MITRE·01:00 PM
Data Sourced
via MITRE·01:00 PM
DescriptionWeakness
Jan 11, 2024
Data Sourced
via Launchpad·10:49 PM
Description
Feb 20, 2026
Data Sourced
via Ubuntu·04:28 PM
RemedyDescriptionSeverityAffected Software
Data Sourced
via Debian·04:28 PM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

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Frequently Asked Questions

1

What is the severity of CVE-2018-12363?

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

2

How do I fix CVE-2018-12363?

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

3

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.

4

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.

5

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.

Company

Resources

Contact

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