CVE-2024-0743: High severity Mozilla Thunderbird vulnerability

Published Jan 23, 2024
ยท
Updated

An unchecked return value in TLS handshake code could have caused a potentially exploitable crash.

Affected Software

21 affected componentsFixes available
Mozilla Thunderbird<115.9
115.9
Mozilla Firefox<122
122
Mozilla Firefox<122.0
Mozilla Firefox ESR<115.9
115.9
redhat/firefox<115.9
115.9
redhat/thunderbird<115.9
115.9
debian/firefox-esr<115.9.0esr-1~deb12u1
115.9.0esr-1~deb12u1
debian/firefox-esr<115.9.0esr-1
115.9.0esr-1
debian/firefox-esr<115.9.0esr-1
115.9.0esr-1
debian/nss<2:3.87.1-1+deb12u1
2:3.87.1-1+deb12u1
debian/nss<2:3.96.1-1
2:3.96.1-1
debian/nss<2:3.96.1-1
2:3.96.1-1
debian/thunderbird<1:115.9.0-1~deb12u1
1:115.9.0-1~deb12u1
debian/thunderbird<1:115.9.0-1
1:115.9.0-1
debian/thunderbird<1:115.9.0-1
1:115.9.0-1
alpine/firefox-esr<115.9.0-r0
115.9.0-r0
alpine/firefox-esr<115.9.0-r0
115.9.0-r0
debian/firefox
160.0-1
debian/firefox-esr
140.12.0esr-1~deb12u1153.7.0esr-1~deb12u1140.15.0esr-1~deb13u1153.7.0esr-1~deb13u1153.5.1esr-1153.7.0esr-1
debian/nss
2:3.87.1-1+deb12u22:3.87.1-1+deb12u42:3.110-1+deb13u42:3.110-1+deb13u52:3.132-1
debian/thunderbird
1:140.12.0esr-1~deb12u11:153.7.0esr-1~deb12u11:140.12.0esr-1~deb13u11:153.7.0esr-1~deb13u11:153.5.0esr-11:153.7.0esr-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade Thunderbird to a version that resolves this vulnerability.

    Fixed in 115.9
  2. Upgrade

    Upgrade Firefox to a version that resolves this vulnerability.

    Fixed in 122
  3. Upgrade

    Upgrade Firefox ESR to a version that resolves this vulnerability.

    Fixed in 115.9
  4. Upgrade

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

    Fixed in 115.9
  5. Upgrade

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

    Fixed in 115.9
  6. Upgrade

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

    Fixed in 115.9.0esr-1~deb12u1
  7. Upgrade

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

    Fixed in 115.9.0esr-1
  8. Upgrade

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

    Fixed in 2:3.87.1-1+deb12u1
  9. Upgrade

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

    Fixed in 2:3.96.1-1
  10. Upgrade

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

    Fixed in 1:115.9.0-1~deb12u1
  11. Upgrade

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

    Fixed in 1:115.9.0-1
  12. Upgrade

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

    Fixed in 115.9.0-r0
  13. Upgrade

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

    Fixed in 160.0-1
  14. Upgrade

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

    Fixed in 140.12.0esr-1~deb12u1Fixed in 153.7.0esr-1~deb12u1Fixed in 140.15.0esr-1~deb13u1Fixed in 153.7.0esr-1~deb13u1Fixed in 153.5.1esr-1Fixed in 153.7.0esr-1
  15. Upgrade

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

    Fixed in 2:3.87.1-1+deb12u2Fixed in 2:3.87.1-1+deb12u4Fixed in 2:3.110-1+deb13u4Fixed in 2:3.110-1+deb13u5Fixed in 2:3.132-1
  16. Upgrade

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

    Fixed in 1:140.12.0esr-1~deb12u1Fixed in 1:153.7.0esr-1~deb12u1Fixed in 1:140.12.0esr-1~deb13u1Fixed in 1:153.7.0esr-1~deb13u1Fixed in 1:153.5.0esr-1Fixed in 1:153.7.0esr-1
  17. Upgrade

    Upgrade Firefox to a version that resolves this vulnerability.

    Fixed in 122Patch mfsa2024-01
  18. Upgrade

    Upgrade Firefox ESR to a version that resolves this vulnerability.

    Fixed in 115.9Patch mfsa2024-01
  19. Upgrade

    Upgrade Thunderbird to a version that resolves this vulnerability.

    Fixed in 115.9Patch mfsa2024-01

Event History

Jan 23, 2024
CVE Published
via Mozillaยท12:00 AM
CVE Published
via MITREยท01:48 PM
Data Sourced
via MITREยท01:48 PM
DescriptionWeakness
Data Sourced
via NVDยท02:15 PM
DescriptionSeverityWeaknessAffected Software
Data Sourced
via OSVยท02:15 PM
DescriptionSeverityAffected Software
Jan 24, 2024
Data Sourced
via Red Hatยท06:31 AM
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 severity of CVE-2024-0743?

CVE-2024-0743 has been identified as a potentially exploitable crash vulnerability in TLS handshake code.

2

What software versions are affected by CVE-2024-0743?

CVE-2024-0743 affects Firefox versions less than 122, Firefox ESR versions less than 115.9, and Thunderbird versions less than 115.9.

3

How do I fix CVE-2024-0743?

To fix CVE-2024-0743, update to Firefox version 122, Firefox ESR version 115.9, or Thunderbird version 115.9 or later.

4

Is CVE-2024-0743 present in the latest version of Firefox?

No, CVE-2024-0743 is not present in the latest version of Firefox 122 or any later versions.

5

Can CVE-2024-0743 be exploited remotely?

While CVE-2024-0743 could lead to an exploitable crash, its precise exploitability may depend on specific conditions and usage.

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.
ยฉ 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203