Description
A buffer overflow occurs when drawing and validating elements with the ANGLE graphics library, used for WebGL content. This is due to an incorrect value being passed within the library during checks and results in a potentially exploitable crash. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | unspecified – < 56 | 56 |
| Mozilla | Firefox ESR | unspecified – < 52.4 | 52.4 |
| Mozilla | Thunderbird | unspecified – < 52.4 | 52.4 |
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 | 52.4.0esr-2 | — |
| Debian 14 | thunderbird | 1:52.4.0-1 | — |
| Debian 13 | firefox-esr | 52.4.0esr-2 | — |
| Debian 13 | thunderbird | 1:52.4.0-1 | — |
| Debian 12 | firefox-esr | 52.4.0esr-2 | — |
| Debian 12 | thunderbird | 1:52.4.0-1 | — |
| Debian 9 | firefox-esr | 52.4.0esr-1~deb9u1 | DSA-3987-1 |
| Debian 9 | thunderbird | 1:52.4.0-1~deb9u1 | DSA-4014-1 |
| Debian 8 | firefox-esr | 52.4.0esr-1~deb8u1 | DSA-3987-1 |
| Debian 8 | thunderbird | 1:52.4.0-1~deb8u1 | DSA-4014-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 7 | firefox-esr | 52.4.0esr-2~deb7u1 | DLA-1118-1 |
| Debian 7 | thunderbird | 1:52.4.0-1~deb7u1 | DLA-1153-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | firefox | 56.0+build6-0ubuntu1 | — |
| Ubuntu 18.04 LTS | thunderbird | 1:52.4.0+build1-0ubuntu2 | — |
| Ubuntu 16.04 LTS | firefox | 56.0+build6-0ubuntu0.16.04.1 | USN-3435-1 |
| Ubuntu 16.04 LTS | thunderbird | 1:52.4.0+build1-0ubuntu0.16.04.2 | USN-3436-1 |
| Ubuntu 14.04 LTS | firefox | 56.0+build6-0ubuntu0.14.04.1 | USN-3435-1 |
| Ubuntu 14.04 LTS | thunderbird | 1:52.4.0+build1-0ubuntu0.14.04.2 | USN-3436-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | firefox | 52.4.0-1.el7_4 | RHSA-2017:2831 |
| RHEL 7 | thunderbird | 52.4.0-2.el7_4 | RHSA-2017:2885 |
| RHEL 6 | firefox | 52.4.0-1.el6_9 | RHSA-2017:2831 |
| RHEL 6 | thunderbird | 52.4.0-2.el6_9 | RHSA-2017:2885 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | MozillaFirefox | 52.4.0esr-109.6.2 | SUSE-SU-2017:2688-1 |
| SLES 12 SP3 | mozilla-nss | 3.29.5-58.3.1 | SUSE-SU-2017:2688-1 |
| SLES 12 SP2 | MozillaFirefox | 52.4.0esr-109.6.2 | SUSE-SU-2017:2688-1 |
| SLES 12 SP2 | mozilla-nss | 3.29.5-58.3.1 | SUSE-SU-2017:2688-1 |
| SLES 12 SP1 | MozillaFirefox | 52.4.0esr-109.6.2 | SUSE-SU-2017:2688-1 |
| SLES 12 SP1 | mozilla-nss | 3.29.5-58.3.1 | SUSE-SU-2017:2688-1 |
| SLES 12 | MozillaFirefox | 52.4.0esr-109.6.2 | SUSE-SU-2017:2688-1 |
| SLES 12 | mozilla-nss | 3.29.5-58.3.1 | SUSE-SU-2017:2688-1 |
| SLES 11 SP4 | MozillaFirefox | 52.4.0esr-72.13.2 | SUSE-SU-2017:2872-2, SUSE-SU-2017:2872-1 |
| SLES 11 SP4 | mozilla-nss | 3.29.5-47.6.1 | SUSE-SU-2017:2872-2, SUSE-SU-2017:2872-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 11 SP3 | MozillaFirefox | 52.4.0esr-72.13.2 | SUSE-SU-2017:2872-2, SUSE-SU-2017:2872-1 |
| SLES 11 SP3 | mozilla-nss | 3.29.5-47.6.1 | SUSE-SU-2017:2872-2, SUSE-SU-2017:2872-1 |
| SLES for SAP 12 SP3 | MozillaFirefox | 52.4.0esr-109.6.2 | SUSE-SU-2017:2688-1 |
| SLES for SAP 12 SP3 | mozilla-nss | 3.29.5-58.3.1 | SUSE-SU-2017:2688-1 |
| SLES for SAP 12 SP2 | MozillaFirefox | 52.4.0esr-109.6.2 | SUSE-SU-2017:2688-1 |
| SLES for SAP 12 SP2 | mozilla-nss | 3.29.5-58.3.1 | SUSE-SU-2017:2688-1 |
| SLES for SAP 12 SP1 | MozillaFirefox | 52.4.0esr-109.6.2 | SUSE-SU-2017:2688-1 |
| SLES for SAP 12 SP1 | mozilla-nss | 3.29.5-58.3.1 | SUSE-SU-2017:2688-1 |
| SLES for SAP 11 SP4 | MozillaFirefox | 52.4.0esr-72.13.2 | SUSE-SU-2017:2872-2, SUSE-SU-2017:2872-1 |
| SLES for SAP 11 SP4 | mozilla-nss | 3.29.5-47.6.1 | SUSE-SU-2017:2872-2, SUSE-SU-2017:2872-1 |
| SUSE Package Hub 12 | MozillaThunderbird | 52.4.0-45.1 | openSUSE-SU-2017:2710-1, openSUSE-SU-2017:2707-1 |
| SUSE OpenStack Cloud 6 | MozillaFirefox | 52.4.0esr-109.6.2 | SUSE-SU-2017:2688-1 |
| SUSE OpenStack Cloud 6 | mozilla-nss | 3.29.5-58.3.1 | SUSE-SU-2017:2688-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | MozillaFirefox | 52.4.0esr-72.13.2 | SUSE-SU-2017:2872-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | mozilla-nss | 3.29.5-47.6.1 | SUSE-SU-2017:2872-1 |
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 | 52.4.0-1.0.1.el7_4 | ELSA-2017-2831 |
| Oracle Linux 7 | thunderbird | 52.4.0-2.0.1.el7_4 | ELSA-2017-2885 |
Advisories 18
- RHSA-2017:2885 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2017:2831 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- USN-3436-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-3435-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4014-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3987-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1118-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1153-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2017:2872-1 Security update for MozillaFirefox, mozilla-nss SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:2872-2 Security update for MozillaFirefox, mozilla-nss SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2017:2710-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:2688-1 Security update for MozillaFirefox, 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
- openSUSE-SU-2024:14572-1 firefox-esr-128.5.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2017:2707-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · May 7, 2025
- openSUSE-SU-2024:10601-1 MozillaThunderbird-91.1.1-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- ELSA-2017-2885 Important: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Oct 12, 2017
- ELSA-2017-2831 Critical: firefox security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Sep 29, 2017
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1398381
- [debian-lts-announce] 20171101 [SECURITY] [DLA 1153-1] icedove/thunderbird security update mailing-list
- https://www.mozilla.org/security/advisories/mfsa2017-22/
- 1039465 vdb-entry
- RHSA-2017:2831 vendor-advisory
- RHSA-2017:2885 vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2017-21/
- DSA-4014 vendor-advisory
- 101053 vdb-entry
- https://www.mozilla.org/security/advisories/mfsa2017-23/
- DSA-3987 vendor-advisory
- GLSA-201803-14 vendor-advisory