Description
Mozilla developers and community members reported memory safety bugs present in Firefox ESR 60.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox ESR < 60.3 and Thunderbird < 60.3.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox ESR | unspecified – < 60.3 | 60.3 |
| Mozilla | Thunderbird | unspecified – < 60.3 | 60.3 |
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 | firefox-esr | 60.3.0esr-1 | — |
| Debian 14 | thunderbird | 1:60.3.0-1 | — |
| Debian 13 | firefox-esr | 60.3.0esr-1 | — |
| Debian 13 | thunderbird | 1:60.3.0-1 | — |
| Debian 12 | firefox-esr | 60.3.0esr-1 | — |
| Debian 12 | thunderbird | 1:60.3.0-1 | — |
| Debian 9 | firefox-esr | 60.3.0esr-1~deb9u1 | DSA-4324-1 |
| Debian 9 | thunderbird | 1:60.3.0-1~deb9u1 | DSA-4337-1 |
| Debian 8 | firefox-esr | 60.3.0esr-1~deb8u1 | DLA-1571-1 |
| Debian 8 | thunderbird | 1:60.3.0-1~deb8u1 | DLA-1575-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | thunderbird | 1:60.4.0+build2-0ubuntu0.18.04.1 | USN-3868-1 |
| Ubuntu 16.04 LTS | thunderbird | 1:60.4.0+build2-0ubuntu0.16.04.1 | USN-3868-1 |
| Ubuntu 14.04 LTS | thunderbird | 1:60.4.0+build2-0ubuntu0.14.04.1 | USN-3868-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | firefox +1 | 60.3.0-1.el7_5 | RHSA-2018:3532, RHSA-2018:3005 |
| RHEL 6 | firefox +1 | 60.3.0-1.el6 | RHSA-2018:3531, RHSA-2018:3006 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | MozillaFirefox | 60.3.0-3.17.1 | SUSE-SU-2018:3656-1 |
| SLES 15 | MozillaThunderbird | 60.3.0-3.17.2 | SUSE-SU-2018:3769-1 |
| SLES 12 SP4 | MozillaFirefox | 60.3.0-109.50.2 | SUSE-SU-2018:3749-2 |
| SLES 12 SP3 | MozillaFirefox | 60.3.0-109.50.2 | SUSE-SU-2018:3749-1 |
| SLES 12 SP2 | MozillaFirefox | 60.3.0-109.50.2 | SUSE-SU-2018:3749-1 |
| SLES 12 SP1 | MozillaFirefox | 60.3.0-109.50.2 | SUSE-SU-2018:3749-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | MozillaFirefox | 60.3.0-109.50.2 | SUSE-SU-2018:3749-1 |
| SLES for SAP 12 SP4 | MozillaFirefox | 60.3.0-109.50.2 | SUSE-SU-2018:3749-2 |
| SLES for SAP 12 SP3 | MozillaFirefox | 60.3.0-109.50.2 | SUSE-SU-2018:3749-1 |
| SLES for SAP 12 SP2 | MozillaFirefox | 60.3.0-109.50.2 | SUSE-SU-2018:3749-1 |
| SLES for SAP 12 SP1 | MozillaFirefox | 60.3.0-109.50.2 | SUSE-SU-2018:3749-3 |
| SUSE Package Hub 12 | MozillaThunderbird | 60.3.0-74.2 | openSUSE-SU-2018:3687-1 |
| SUSE OpenStack Cloud 7 | MozillaFirefox | 60.3.0-109.50.2 | SUSE-SU-2018:3749-1 |
| SUSE Enterprise Storage 4 | MozillaFirefox | 60.3.0-109.50.2 | SUSE-SU-2018:3749-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaThunderbird | 91.1.1-1.1 | openSUSE-SU-2024:10601-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | thunderbird | 60.2.1-4.amzn2.0.1 | ALAS2-2019-1157 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | firefox +1 | 60.3.0-1.0.1.el7_5 | ELSA-2018-3532, ELSA-2018-3005 |
Advisories 19
- RHSA-2018:3531 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2018:3532 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2018:3005 Red Hat Security Advisory: firefox security and bug fix update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2018:3006 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- USN-3868-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4337-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-4324-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1571-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1575-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2018:3769-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3656-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3749-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2018:3687-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3749-3 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10601-1 MozillaThunderbird-91.1.1-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- SUSE-SU-2018:3749-2 Security update for MozillaFirefox SUSE / openSUSE Security Updates · May 2, 2025
- ALAS2-2019-1157 Critical: thunderbird security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Feb 14, 2019
- ELSA-2018-3532 Important: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 9, 2018
- ELSA-2018-3005 Critical: firefox security and bug fix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Oct 24, 2018
References
- 105769 vdb-entry
- DSA-4324 vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2018-28/
- [debian-lts-announce] 20181112 [SECURITY] [DLA 1575-1] thunderbird security update mailing-list
- GLSA-201811-04 vendor-advisory
- GLSA-201811-13 vendor-advisory
- DSA-4337 vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2018-27/
- RHSA-2018:3005 vendor-advisory
- RHSA-2018:3006 vendor-advisory
- USN-3868-1 vendor-advisory
- RHSA-2018:3532 vendor-advisory
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1498460%2C1499198
- 105723 vdb-entry
- RHSA-2018:3531 vendor-advisory
- [debian-lts-announce] 20181107 [SECURITY] [DLA 1571-1] firefox-esr security update mailing-list
- 1041944 vdb-entry