CVE-2019-11752: Use After Free

Published Sep 3, 2019
·
Updated

It is possible to delete an IndexedDB key value and subsequently try to extract it during conversion. This results in a use-after-free and a potentially exploitable crash.

Affected Software

29 affected componentsFixes available
Mozilla Thunderbird<60.9
60.9
Mozilla Thunderbird<68.1
68.1
Mozilla Firefox<69.0
Mozilla Firefox ESR<60.9.0
Mozilla Firefox ESR>=68.0<68.1.0
Mozilla Thunderbird<60.9.0
Mozilla Thunderbird>=68.0<68.1.0
Mozilla Firefox ESR<68.1
68.1
Mozilla Firefox<69
69
Mozilla Firefox ESR<60.9
60.9
Mozilla Firefox<60.9.0
debian/firefox
147.0.4-1
debian/firefox-esr
115.14.0esr-1~deb11u1140.7.0esr-1~deb11u1128.14.0esr-1~deb12u1140.8.0esr-1~deb12u1140.4.0esr-1~deb13u1140.8.0esr-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
alpine/firefox-esr<69.9.0-r0
69.9.0-r0
alpine/firefox-esr<68.1.0-r0
68.1.0-r0
alpine/firefox-esr<68.1.0-r0
68.1.0-r0
alpine/firefox-esr<68.1.0-r0
68.1.0-r0
alpine/firefox-esr<68.1.0-r0
68.1.0-r0
alpine/firefox-esr<68.1.0-r0
68.1.0-r0
alpine/firefox-esr<68.1.0-r0
68.1.0-r0
alpine/firefox-esr<68.1.0-r0
68.1.0-r0
alpine/firefox-esr<68.1.0-r0
68.1.0-r0
alpine/firefox-esr<68.1.0-r0
68.1.0-r0
alpine/firefox-esr<68.1.0-r0
68.1.0-r0
alpine/firefox-esr<68.1.0-r0
68.1.0-r0
alpine/firefox-esr<68.1.0-r0
68.1.0-r0
alpine/firefox-esr<68.1.0-r0
68.1.0-r0
alpine/firefox-esr<69.9.0-r0
69.9.0-r0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade Thunderbird to a version that resolves this vulnerability.

    Fixed in 60.9
  2. Upgrade

    Upgrade Thunderbird to a version that resolves this vulnerability.

    Fixed in 68.1
  3. Upgrade

    Upgrade Firefox ESR to a version that resolves this vulnerability.

    Fixed in 68.1
  4. Upgrade

    Upgrade Firefox to a version that resolves this vulnerability.

    Fixed in 69
  5. Upgrade

    Upgrade Firefox ESR to a version that resolves this vulnerability.

    Fixed in 60.9
  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 140.8.0esr-1~deb12u1Fixed in 140.4.0esr-1~deb13u1Fixed in 140.8.0esr-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 alpine/firefox-esr to a version that resolves this vulnerability.

    Fixed in 69.9.0-r0
  10. Upgrade

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

    Fixed in 68.1.0-r0

Event History

Sep 3, 2019
CVE Published
12:00 AM
Sep 27, 2019
CVE Published
via MITRE·05:14 PM
Data Sourced
via MITRE·05:14 PM
DescriptionWeakness
Data Sourced
via NVD·06:15 PM
DescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·06:15 PM
DescriptionSeverityAffected Software
Event
06:15 PM

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is CVE-2019-11752?

CVE-2019-11752 is a vulnerability that allows an attacker to delete an IndexedDB key value and subsequently try to extract it during conversion, resulting in a use-after-free and a potentially exploitable crash.

2

Which software versions are affected by CVE-2019-11752?

Mozilla Firefox ESR versions up to 68.1, Mozilla Firefox versions up to 69, Mozilla Thunderbird versions up to 60.9.

3

What is the severity of CVE-2019-11752?

CVE-2019-11752 has a severity rating of 7 (high).

4

How can I fix CVE-2019-11752?

Update to Mozilla Firefox ESR version 68.1, Mozilla Firefox version 69, or Mozilla Thunderbird version 60.9.

5

Where can I find more information about CVE-2019-11752?

You can find more information about CVE-2019-11752 on the Mozilla Bugzilla page (https://bugzilla.mozilla.org/show_bug.cgi?id=1501152) and the Mozilla security advisories (https://www.mozilla.org/en-US/security/advisories/mfsa2019-26/ and https://www.mozilla.org/en-US/security/advisories/mfsa2019-29/).

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203