CVE-2023-25730: High severity Mozilla Thunderbird vulnerability

Published Feb 14, 2023
·
Updated

A background script invoking requestFullscreen and then blocking the main thread could force the browser into fullscreen mode indefinitely, resulting in potential user confusion or spoofing attacks.

External Reference: https://www.mozilla.org/en-US/security/advisories/mfsa2023-06/#CVE-2023-25730

Other sources

A background script invoking <code>requestFullscreen</code> and then blocking the main thread could force the browser into fullscreen mode indefinitely, resulting in potential user confusion or spoofing attacks. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.

A background script invoking requestFullscreen and then blocking the main thread could force the browser into fullscreen mode indefinitely, resulting in potential user confusion or spoofing attacks.

The Mozilla Foundation Security Advisory describes this flaw as: A background script invoking requestFullscreen and then blocking the main thread could force the browser into fullscreen mode indefinitely, resulting in potential user confusion or spoofing attacks.

Affected Software

33 affected componentsFixes available
redhat/firefox<0:102.8.0-2.el7_9
0:102.8.0-2.el7_9
redhat/thunderbird<0:102.8.0-2.el7_9
0:102.8.0-2.el7_9
redhat/firefox<0:102.8.0-2.el8_7
0:102.8.0-2.el8_7
redhat/thunderbird<0:102.8.0-2.el8_7
0:102.8.0-2.el8_7
redhat/firefox<0:102.8.0-2.el8_1
0:102.8.0-2.el8_1
redhat/thunderbird<0:102.8.0-2.el8_1
0:102.8.0-2.el8_1
redhat/firefox<0:102.8.0-2.el8_2
0:102.8.0-2.el8_2
redhat/thunderbird<0:102.8.0-2.el8_2
0:102.8.0-2.el8_2
redhat/firefox<0:102.8.0-2.el8_4
0:102.8.0-2.el8_4
redhat/thunderbird<0:102.8.0-2.el8_4
0:102.8.0-2.el8_4
redhat/firefox<0:102.8.0-2.el8_6
0:102.8.0-2.el8_6
redhat/thunderbird<0:102.8.0-2.el8_6
0:102.8.0-2.el8_6
redhat/firefox<0:102.8.0-2.el9_1
0:102.8.0-2.el9_1
redhat/thunderbird<0:102.8.0-2.el9_1
0:102.8.0-2.el9_1
redhat/firefox<0:102.8.0-2.el9_0
0:102.8.0-2.el9_0
redhat/thunderbird<0:102.8.0-2.el9_0
0:102.8.0-2.el9_0
redhat/firefox<102.8
102.8
redhat/thunderbird<102.8
102.8
Mozilla Thunderbird<102.8
102.8
Mozilla Firefox<110.0
Mozilla Firefox ESR<102.8
Mozilla Thunderbird<102.8
Mozilla Firefox<110
110
Mozilla Firefox ESR<102.8
102.8
alpine/firefox-esr<102.8.0-r0
102.8.0-r0
alpine/firefox-esr<102.8.0-r0
102.8.0-r0
alpine/firefox-esr<102.8.0-r0
102.8.0-r0
alpine/firefox-esr<102.8.0-r0
102.8.0-r0
alpine/firefox-esr<102.8.0-r0
102.8.0-r0
alpine/firefox-esr<102.8.0-r0
102.8.0-r0
debian/firefox
159.0.1-1
debian/firefox-esr
140.12.0esr-1~deb12u1153.6.0esr-1~deb12u2140.15.0esr-1~deb13u1153.6.0esr-1~deb13u1153.5.1esr-1153.6.0esr-1
debian/thunderbird
1:140.12.0esr-1~deb12u11:153.6.0esr-1~deb12u21:140.12.0esr-1~deb13u11:153.6.0esr-1~deb13u11:153.5.0esr-11:153.6.0esr-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

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

    Fixed in 0:102.8.0-2.el7_9
  2. Upgrade

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

    Fixed in 0:102.8.0-2.el7_9
  3. Upgrade

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

    Fixed in 0:102.8.0-2.el8_7
  4. Upgrade

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

    Fixed in 0:102.8.0-2.el8_7
  5. Upgrade

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

    Fixed in 0:102.8.0-2.el8_1
  6. Upgrade

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

    Fixed in 0:102.8.0-2.el8_1
  7. Upgrade

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

    Fixed in 0:102.8.0-2.el8_2
  8. Upgrade

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

    Fixed in 0:102.8.0-2.el8_2
  9. Upgrade

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

    Fixed in 0:102.8.0-2.el8_4
  10. Upgrade

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

    Fixed in 0:102.8.0-2.el8_4
  11. Upgrade

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

    Fixed in 0:102.8.0-2.el8_6
  12. Upgrade

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

    Fixed in 0:102.8.0-2.el8_6
  13. Upgrade

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

    Fixed in 0:102.8.0-2.el9_1
  14. Upgrade

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

    Fixed in 0:102.8.0-2.el9_1
  15. Upgrade

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

    Fixed in 0:102.8.0-2.el9_0
  16. Upgrade

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

    Fixed in 0:102.8.0-2.el9_0
  17. Upgrade

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

    Fixed in 102.8
  18. Upgrade

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

    Fixed in 102.8
  19. Upgrade

    Upgrade Thunderbird to a version that resolves this vulnerability.

    Fixed in 102.8
  20. Upgrade

    Upgrade Firefox to a version that resolves this vulnerability.

    Fixed in 110
  21. Upgrade

    Upgrade Firefox ESR to a version that resolves this vulnerability.

    Fixed in 102.8
  22. Upgrade

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

    Fixed in 102.8.0-r0
  23. Upgrade

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

    Fixed in 159.0.1-1
  24. Upgrade

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

    Fixed in 140.12.0esr-1~deb12u1Fixed in 153.6.0esr-1~deb12u2Fixed in 140.15.0esr-1~deb13u1Fixed in 153.6.0esr-1~deb13u1Fixed in 153.5.1esr-1Fixed in 153.6.0esr-1
  25. Upgrade

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

    Fixed in 1:140.12.0esr-1~deb12u1Fixed in 1:153.6.0esr-1~deb12u2Fixed in 1:140.12.0esr-1~deb13u1Fixed in 1:153.6.0esr-1~deb13u1Fixed in 1:153.5.0esr-1Fixed in 1:153.6.0esr-1

Event History

Feb 14, 2023
CVE Published
via Mozilla·12:00 AM
Jun 2, 2023
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
DescriptionWeakness
Data Sourced
05:15 PM
Description
Data Sourced
via NVD·05:15 PM
DescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·05:15 PM
DescriptionSeverityAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the vulnerability ID?

The vulnerability ID is CVE-2023-25730.

2

Which software products are affected by the vulnerability?

The vulnerability affects Firefox versions less than 110, Thunderbird versions less than 102.8, and Firefox ESR versions less than 102.8.

3

What is the severity of CVE-2023-25730?

The severity of CVE-2023-25730 is high with a severity value of 7.

4

How can I fix the vulnerability in Firefox and Thunderbird?

To fix the vulnerability in Firefox and Thunderbird, update to version 110 or higher for Firefox, 102.8 or higher for Thunderbird.

5

Where can I find more information about CVE-2023-25730?

You can find more information about CVE-2023-25730 in the following references: [Bugzilla](https://bugzilla.mozilla.org/show_bug.cgi?id=1794622), [Mozilla Advisory](https://www.mozilla.org/security/advisories/mfsa2023-05/), [Mozilla Advisory](https://www.mozilla.org/security/advisories/mfsa2023-07/).

Company

Resources

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