Description
When deriving an identifier for an email message, uninitialized memory was used in addition to the message contents. This vulnerability affects Thunderbird < 68.5.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Thunderbird | unspecified – < 68.5 | 68.5 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | thunderbird | 1:68.5.0-1 | — |
| Debian 13 | thunderbird | 1:68.5.0-1 | — |
| Debian 12 | thunderbird | 1:68.5.0-1 | — |
| Debian 10 | thunderbird | 1:68.5.0-1~deb10u1 | DSA-4625-1 |
| Debian 9 | thunderbird | 1:68.5.0-1~deb9u1 | DSA-4625-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 8 | thunderbird | 1:68.5.0-1~deb8u1 | DLA-2104-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | thunderbird | 1:68.7.0+build1-0ubuntu0.18.04.1 | USN-4328-1 |
| Ubuntu 16.04 LTS | thunderbird | 1:68.7.0+build1-0ubuntu0.16.04.2 | USN-4335-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | thunderbird | 68.5.0-1.el8_1 | RHSA-2020:0577 |
| RHEL 7 | thunderbird | 68.5.0-1.el7_7 | RHSA-2020:0576 |
| RHEL 6 | thunderbird | 68.5.0-1.el6_10 | RHSA-2020:0574 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.0 E4S | thunderbird | 68.5.0-1.el8_0 | RHSA-2020:0565 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | MozillaThunderbird | 68.5.0-3.71.1 | SUSE-SU-2020:0385-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaThunderbird | 91.1.1-1.1 | openSUSE-SU-2024:10601-1 |
| openSUSE Leap 15.1 | MozillaThunderbird | 68.5.0-lp151.2.25.1 | openSUSE-SU-2020:0231-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.23 | thunderbird | 68.5.0-r0 | — |
| Alpine v3.22 | thunderbird | 68.5.0-r0 | — |
| Alpine v3.21 | thunderbird | 68.5.0-r0 | — |
| Alpine v3.20 | thunderbird | 68.5.0-r0 | — |
| Alpine v3.19 | thunderbird | 68.5.0-r0 | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.18 | thunderbird | 68.5.0-r0 | — |
| Alpine v3.17 | thunderbird | 68.5.0-r0 | — |
| Alpine v3.16 | thunderbird | 68.5.0-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | thunderbird | 68.5.0-1.amzn2.0.1 | ALAS2-2020-1408 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | thunderbird | 68.5.0-1.0.1.el8_1 | ELSA-2020-0577 |
| Oracle Linux 7 | thunderbird | 68.5.0-1.0.1.el7_7 | ELSA-2020-0576 |
Advisories 14
- RHSA-2020:0576 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2020:0574 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-4328-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- USN-4335-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DSA-4625-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2104-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2020:0231-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:0385-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- RHSA-2020:0577 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2020:0565 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- openSUSE-SU-2024:10601-1 MozillaThunderbird-91.1.1-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- ALAS2-2020-1408 Important: thunderbird security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Mar 25, 2020
- ELSA-2020-0577 Important: thunderbird security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Feb 26, 2020
- ELSA-2020-0576 Important: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Feb 25, 2020
References
- https://www.mozilla.org/security/advisories/mfsa2020-07/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1609607
- GLSA-202003-10 vendor-advisory
- USN-4328-1 vendor-advisory
- USN-4335-1 vendor-advisory