CVE-2022-22742: Medium severity Mozilla Firefox vulnerability

Published Jan 11, 2022
·
Updated

When inserting text while in edit mode, some characters might have lead to out-of-bounds memory access causing a potentially exploitable crash.

Affected Software

44 affected componentsFixes available
Mozilla Firefox<96.0
Mozilla Firefox ESR<91.5
Mozilla Thunderbird<91.5
Mozilla Firefox ESR<91.5
91.5
Mozilla Thunderbird<91.5
91.5
Mozilla Firefox<96
96
alpine/firefox<97.0-r0
97.0-r0
alpine/firefox<97.0-r0
97.0-r0
alpine/firefox<97.0-r0
97.0-r0
alpine/firefox<97.0-r0
97.0-r0
alpine/firefox<97.0-r0
97.0-r0
alpine/firefox<97.0-r0
97.0-r0
alpine/firefox<97.0-r0
97.0-r0
alpine/firefox<97.0-r0
97.0-r0
alpine/firefox-esr<91.5.0-r0
91.5.0-r0
alpine/firefox-esr<91.5.0-r0
91.5.0-r0
alpine/firefox-esr<91.5.0-r0
91.5.0-r0
alpine/firefox-esr<91.5.0-r0
91.5.0-r0
alpine/firefox-esr<91.5.0-r0
91.5.0-r0
alpine/firefox-esr<91.5.0-r0
91.5.0-r0
alpine/firefox-esr<91.5.0-r0
91.5.0-r0
alpine/firefox-esr<91.5.0-r0
91.5.0-r0
alpine/firefox-esr<91.5.0-r0
91.5.0-r0
alpine/librewolf<97.0-r0
97.0-r0
alpine/librewolf<97.0-r0
97.0-r0
alpine/librewolf<97.0-r0
97.0-r0
alpine/librewolf<97.0-r0
97.0-r0
alpine/thunderbird<91.5.0-r0
91.5.0-r0
alpine/thunderbird<91.5.0-r0
91.5.0-r0
alpine/thunderbird<91.5.0-r0
91.5.0-r0
alpine/thunderbird<91.5.0-r0
91.5.0-r0
alpine/thunderbird<91.5.0-r0
91.5.0-r0
alpine/thunderbird<91.5.0-r0
91.5.0-r0
alpine/thunderbird<91.5.0-r0
91.5.0-r0
alpine/thunderbird<91.5.0-r0
91.5.0-r0
debian/firefox-esr<91.5.0esr-1
91.5.0esr-1
debian/firefox-esr<91.5.0esr-1
91.5.0esr-1
debian/firefox-esr<91.5.0esr-1
91.5.0esr-1
debian/thunderbird<1:91.5.0-1
1:91.5.0-1
debian/thunderbird<1:91.5.0-1
1:91.5.0-1
debian/thunderbird<1:91.5.0-1
1:91.5.0-1
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 Firefox ESR to a version that resolves this vulnerability.

    Fixed in 91.5
  2. Upgrade

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

    Fixed in 91.5
  3. Upgrade

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

    Fixed in 96
  4. Upgrade

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

    Fixed in 97.0-r0
  5. Upgrade

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

    Fixed in 91.5.0-r0
  6. Upgrade

    Upgrade alpine/librewolf to a version that resolves this vulnerability.

    Fixed in 97.0-r0
  7. Upgrade

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

    Fixed in 91.5.0-r0
  8. Upgrade

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

    Fixed in 91.5.0esr-1
  9. Upgrade

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

    Fixed in 1:91.5.0-1
  10. Upgrade

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

    Fixed in 159.0.1-1
  11. 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
  12. 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

Jan 11, 2022
CVE Published
12:00 AM
Data Sourced
via Mozilla·12:00 AM
DescriptionSeverityAffected Software
Dec 22, 2022
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
DescriptionWeakness
Data Sourced
via NVD·08:15 PM
DescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·08:15 PM
DescriptionSeverityAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the severity of CVE-2022-22742?

CVE-2022-22742 is classified as a potentially exploitable security vulnerability due to out-of-bounds memory access.

2

How do I fix CVE-2022-22742?

To fix CVE-2022-22742, users should update to versions of Firefox and Thunderbird later than those listed as affected.

3

Which software is affected by CVE-2022-22742?

CVE-2022-22742 affects Mozilla Firefox ESR versions prior to 91.5, Firefox versions prior to 96, and Thunderbird versions prior to 91.5.

4

What type of vulnerability is CVE-2022-22742?

CVE-2022-22742 is an out-of-bounds memory access vulnerability that can lead to application crashes.

5

Can CVE-2022-22742 be exploited remotely?

The exploitation potential of CVE-2022-22742 could lead to crashes but may also allow for remote code execution under certain conditions.

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