Description
A vulnerability can occur when capturing a media stream when the media source type is changed as the capture is occurring. This can result in stream data being cast to the wrong type causing a potentially exploitable crash. This vulnerability affects Thunderbird < 60, Firefox ESR < 60.1, Firefox ESR < 52.9, and Firefox < 61.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Thunderbird | unspecified – < 60 | 60 |
| Mozilla | Firefox ESR | unspecified – < 60.1, unspecified – < 52.9 | 60.1 |
| Mozilla | Firefox | unspecified – < 61 | 61 |
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 | 52.9.0esr-1 | — |
| Debian 14 | thunderbird | 1:60.0-1 | — |
| Debian 13 | firefox-esr | 52.9.0esr-1 | — |
| Debian 13 | thunderbird | 1:60.0-1 | — |
| Debian 12 | firefox-esr | 52.9.0esr-1 | — |
| Debian 12 | thunderbird | 1:60.0-1 | — |
| Debian 9 | firefox-esr | 52.9.0esr-1~deb9u1 | DSA-4235-1 |
| Debian 9 | thunderbird | 1:60.0-3~deb9u1 | DSA-4295-1 |
| Debian 8 | firefox-esr | 52.9.0esr-1~deb8u1 | DLA-1406-1 |
| Debian 8 | thunderbird | 1:60.3.0-1~deb8u1 | DLA-1575-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | firefox | 61.0+build3-0ubuntu0.18.04.1 | USN-3705-1 |
| Ubuntu 16.04 LTS | firefox | 61.0+build3-0ubuntu0.16.04.2 | USN-3705-1 |
| Ubuntu 14.04 LTS | firefox | 61.0+build3-0ubuntu0.14.04.2 | USN-3705-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | firefox | 60.1.0-4.el7_5 | RHSA-2018:2113 |
| RHEL 6 | firefox | 60.1.0-5.el6 | RHSA-2018:2112 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | MozillaFirefox | 52.9.0esr-3.7.12 | SUSE-SU-2018:2298-1 |
| SLES 15 | MozillaThunderbird | 60.2.1-3.13.1 | SUSE-SU-2018:3247-1 |
| SLES 12 SP3 | MozillaFirefox | 52.9.0esr-109.38.2 | SUSE-SU-2018:2322-1 |
| SLES 12 SP2 | MozillaFirefox | 52.9.0esr-109.38.2 | SUSE-SU-2018:2322-2, SUSE-SU-2018:2322-1 |
| SLES 12 SP1 | MozillaFirefox | 52.9.0esr-109.38.2 | SUSE-SU-2018:2322-1 |
| SLES 12 | MozillaFirefox | 52.9.0esr-109.38.2 | SUSE-SU-2018:2322-1 |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 11 SP4 | MozillaFirefox | 52.9.0esr-72.38.6 | SUSE-SU-2018:2325-1 |
| SLES 11 SP3 | MozillaFirefox | 52.9.0esr-72.38.6 | SUSE-SU-2018:2325-1 |
| SLES for SAP 12 SP3 | MozillaFirefox | 52.9.0esr-109.38.2 | SUSE-SU-2018:2322-1 |
| SLES for SAP 12 SP2 | MozillaFirefox | 52.9.0esr-109.38.2 | SUSE-SU-2018:2322-1 |
| SLES for SAP 12 SP1 | MozillaFirefox | 52.9.0esr-109.38.2 | SUSE-SU-2018:2322-1 |
| SLES for SAP 11 SP4 | MozillaFirefox | 52.9.0esr-72.38.6 | SUSE-SU-2018:2325-1 |
| SUSE Package Hub 15 | seamonkey | 2.49.4-bp150.3.3.1 | openSUSE-SU-2018:2807-1 |
| SUSE Package Hub 12 | MozillaThunderbird | 60.3.0-74.2 | openSUSE-SU-2018:3687-1 |
| SUSE OpenStack Cloud 7 | MozillaFirefox | 52.9.0esr-109.38.2 | SUSE-SU-2018:2322-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | MozillaFirefox | 52.9.0esr-72.38.6 | SUSE-SU-2018:2325-1 |
| SUSE Enterprise Storage 4 | MozillaFirefox | 52.9.0esr-109.38.2 | SUSE-SU-2018:2322-1 |
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 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | firefox | 60.1.0-4.0.1.el7_5 | ELSA-2018-2113 |
Advisories 18
- RHSA-2018:2113 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2018:2112 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- USN-3705-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4295-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-4235-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1575-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1406-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2018:2322-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2322-2 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2298-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3247-1 Security update for MozillaThunderbird 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-2018:2325-1 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
- openSUSE-SU-2018:2807-1 Security update for seamonkey 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
- ELSA-2018-2113 Critical: firefox security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jul 4, 2018
References
- GLSA-201810-01 vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2018-15/
- RHSA-2018:2112 vendor-advisory
- [debian-lts-announce] 20181112 [SECURITY] [DLA 1575-1] thunderbird security update mailing-list
- GLSA-201811-13 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1453127
- DSA-4235 vendor-advisory
- DSA-4295 vendor-advisory
- RHSA-2018:2113 vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2018-16/
- 104560 vdb-entry
- 1041193 vdb-entry
- https://www.mozilla.org/security/advisories/mfsa2018-19/
- https://www.mozilla.org/security/advisories/mfsa2018-17/
- USN-3705-1 vendor-advisory
- [debian-lts-announce] 20180629 [SECURITY] [DLA 1406-1] firefox-esr security update mailing-list