Description
A use-after-free vulnerability can occur after deleting a selection element due to a weak reference to the select element in the options collection. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox < 64.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Thunderbird | unspecified – < 60.4 | 60.4 |
| Mozilla | Firefox ESR | unspecified – < 60.4 | 60.4 |
| Mozilla | Firefox | unspecified – < 64 | 64 |
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 | 60.4.0esr-1 | — |
| Debian 14 | thunderbird | 1:60.4.0-1 | — |
| Debian 13 | firefox-esr | 60.4.0esr-1 | — |
| Debian 13 | thunderbird | 1:60.4.0-1 | — |
| Debian 12 | firefox-esr | 60.4.0esr-1 | — |
| Debian 12 | thunderbird | 1:60.4.0-1 | — |
| Debian 9 | firefox-esr | 60.4.0esr-1~deb9u1 | DSA-4354-1 |
| Debian 9 | thunderbird | 1:60.4.0-1~deb9u1 | DSA-4362-1 |
| Debian 8 | firefox-esr | 60.4.0esr-1~deb8u1 | DLA-1605-1 |
| Debian 8 | thunderbird | 1:60.4.0-1~deb8u1 | DLA-1624-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | firefox | 64.0+build3-0ubuntu0.18.04.1 | USN-3844-1 |
| Ubuntu 18.04 LTS | thunderbird | 1:60.4.0+build2-0ubuntu0.18.04.1 | USN-3868-1 |
| Ubuntu 16.04 LTS | firefox | 64.0+build3-0ubuntu0.16.04.1 | USN-3844-1 |
| Ubuntu 16.04 LTS | thunderbird | 1:60.4.0+build2-0ubuntu0.16.04.1 | USN-3868-1 |
| Ubuntu 14.04 LTS | firefox | 64.0+build3-0ubuntu0.14.04.1 | USN-3844-1 |
| 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 | 60.4.0-1.el7 | RHSA-2018:3833 |
| RHEL 7 | thunderbird | 60.4.0-1.el7_6 | RHSA-2019:0160 |
| RHEL 6 | firefox +1 | 60.4.0-1.el6 | RHSA-2019:0159, RHSA-2018:3831 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | MozillaFirefox | 60.4.0-3.21.1 | SUSE-SU-2018:4235-1 |
| SLES 15 | MozillaThunderbird | 60.5.0-3.20.2 | SUSE-SU-2019:0338-1 |
| SLES 15 | mozilla-nspr | 4.20-3.3.2 | SUSE-SU-2018:4235-1 |
| SLES 15 | mozilla-nss | 3.40.1-3.7.2 | SUSE-SU-2018:4235-1 |
| SLES 12 SP4 | MozillaFirefox | 60.4.0esr-109.55.1 | SUSE-SU-2018:4236-1 |
| SLES 12 SP4 | mozilla-nspr | 4.20-19.6.1 | SUSE-SU-2018:4236-1 |
| SLES 12 SP4 | mozilla-nss | 3.40.1-58.18.1 | SUSE-SU-2018:4236-1 |
| SLES 12 SP3 | MozillaFirefox | 60.4.0esr-109.55.1 | SUSE-SU-2018:4236-1 |
| SLES 12 SP3 | mozilla-nspr | 4.20-19.6.1 | SUSE-SU-2018:4236-1 |
| SLES 12 SP3 | mozilla-nss | 3.40.1-58.18.1 | SUSE-SU-2018:4236-1 |
| SLES 12 SP2 | MozillaFirefox | 60.4.0esr-109.55.1 | SUSE-SU-2018:4236-1 |
| SLES 12 SP2 | mozilla-nspr | 4.20-19.6.1 | SUSE-SU-2018:4236-1 |
| SLES 12 SP2 | mozilla-nss | 3.40.1-58.18.1 | SUSE-SU-2018:4236-1 |
| SLES 12 SP1 | MozillaFirefox | 60.4.0esr-109.55.1 | SUSE-SU-2018:4236-1 |
| SLES 12 SP1 | mozilla-nspr | 4.20-19.6.1 | SUSE-SU-2018:4236-1 |
| SLES 12 SP1 | mozilla-nss | 3.40.1-58.18.1 | SUSE-SU-2018:4236-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | MozillaFirefox | 60.4.0esr-109.55.1 | SUSE-SU-2018:4236-1 |
| SLES 12 | mozilla-nspr | 4.20-19.6.1 | SUSE-SU-2018:4236-1 |
| SLES 12 | mozilla-nss | 3.40.1-58.18.1 | SUSE-SU-2018:4236-1 |
| SLES for SAP 12 SP4 | MozillaFirefox | 60.4.0esr-109.55.1 | SUSE-SU-2018:4236-1 |
| SLES for SAP 12 SP4 | mozilla-nspr | 4.20-19.6.1 | SUSE-SU-2018:4236-1 |
| SLES for SAP 12 SP4 | mozilla-nss | 3.40.1-58.18.1 | SUSE-SU-2018:4236-1 |
| SLES for SAP 12 SP3 | MozillaFirefox | 60.4.0esr-109.55.1 | SUSE-SU-2018:4236-1 |
| SLES for SAP 12 SP3 | mozilla-nspr | 4.20-19.6.1 | SUSE-SU-2018:4236-1 |
| SLES for SAP 12 SP3 | mozilla-nss | 3.40.1-58.18.1 | SUSE-SU-2018:4236-1 |
| SLES for SAP 12 SP2 | MozillaFirefox | 60.4.0esr-109.55.1 | SUSE-SU-2018:4236-1 |
| SLES for SAP 12 SP2 | mozilla-nspr | 4.20-19.6.1 | SUSE-SU-2018:4236-1 |
| SLES for SAP 12 SP2 | mozilla-nss | 3.40.1-58.18.1 | SUSE-SU-2018:4236-1 |
| SLES for SAP 12 SP1 | MozillaFirefox | 60.4.0esr-109.55.1 | SUSE-SU-2018:4236-2 |
| SLES for SAP 12 SP1 | mozilla-nspr | 4.20-19.6.1 | SUSE-SU-2018:4236-2 |
| SLES for SAP 12 SP1 | mozilla-nss | 3.40.1-58.18.1 | SUSE-SU-2018:4236-2 |
| SUSE Package Hub 12 | MozillaThunderbird | 60.5.1-79.1 | openSUSE-SU-2019:0249-1 |
| SUSE OpenStack Cloud 7 | MozillaFirefox | 60.4.0esr-109.55.1 | SUSE-SU-2018:4236-1 |
| SUSE OpenStack Cloud 7 | mozilla-nspr | 4.20-19.6.1 | SUSE-SU-2018:4236-1 |
| SUSE OpenStack Cloud 7 | mozilla-nss | 3.40.1-58.18.1 | SUSE-SU-2018:4236-1 |
| SUSE Enterprise Storage 4 | MozillaFirefox | 60.4.0esr-109.55.1 | SUSE-SU-2018:4236-1 |
| SUSE Enterprise Storage 4 | mozilla-nspr | 4.20-19.6.1 | SUSE-SU-2018:4236-1 |
| SUSE Enterprise Storage 4 | mozilla-nss | 3.40.1-58.18.1 | SUSE-SU-2018:4236-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 92.0-1.2 | openSUSE-SU-2024:10600-1 |
| openSUSE Tumbleweed | MozillaThunderbird | 91.1.1-1.1 | openSUSE-SU-2024:10601-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | thunderbird | 60.5.0-1.amzn2.0.1 | ALAS2-2019-1168 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | firefox | 60.4.0-1.0.1.el7 | ELSA-2018-3833 |
| Oracle Linux 7 | thunderbird | 60.4.0-1.0.1.el7_6 | ELSA-2019-0160 |
Advisories 21
- RHSA-2019:0160 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2019:0159 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2018:3833 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2018:3831 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-3868-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-3844-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4354-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-4362-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1605-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1624-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2018:4235-1 Security update for MozillaFirefox, mozilla-nspr and mozilla-nss SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:4236-1 Security update for MozillaFirefox, mozilla-nspr and mozilla-nss SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10600-1 MozillaFirefox-92.0-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:4236-2 Security update for MozillaFirefox, mozilla-nspr and mozilla-nss SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0338-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:14572-1 firefox-esr-128.5.1-1.1 on GA media 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
- openSUSE-SU-2019:0249-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · May 2, 2025
- ALAS2-2019-1168 Critical: thunderbird security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Mar 8, 2019
- ELSA-2019-0160 Important: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jan 25, 2019
- ELSA-2018-3833 Critical: firefox security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Dec 18, 2018
References
- https://www.mozilla.org/security/advisories/mfsa2018-29/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1499861
- [debian-lts-announce] 20181213 [SECURITY] [DLA 1605-1] firefox-esr security update mailing-list
- RHSA-2018:3833 vendor-advisory
- RHSA-2018:3831 vendor-advisory
- DSA-4362 vendor-advisory
- GLSA-201903-04 vendor-advisory
- USN-3844-1 vendor-advisory
- 106168 vdb-entry
- RHSA-2019:0159 vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2018-31/
- https://www.mozilla.org/security/advisories/mfsa2018-30/
- DSA-4354 vendor-advisory
- USN-3868-1 vendor-advisory
- RHSA-2019:0160 vendor-advisory