Description
A buffer overflow could occur when parsing and validating SCTP chunks in WebRTC. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox ESR | unspecified – < 68.8 | 68.8 |
| Mozilla | Firefox | unspecified – < 76 | 76 |
| Mozilla | Thunderbird | unspecified – < 68.8.0 | 68.8.0 |
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 | chromium | 83.0.4103.83-1 | — |
| Debian 14 | firefox-esr | 68.8.0esr-1 | — |
| Debian 14 | thunderbird | 1:68.8.0-1 | — |
| Debian 13 | chromium | 83.0.4103.83-1 | — |
| Debian 13 | firefox-esr | 68.8.0esr-1 | — |
| Debian 13 | thunderbird | 1:68.8.0-1 | — |
| Debian 12 | chromium | 83.0.4103.83-1 | — |
| Debian 12 | firefox-esr | 68.8.0esr-1 | — |
| Debian 12 | thunderbird | 1:68.8.0-1 | — |
| Debian 10 | chromium | 83.0.4103.116-1~deb10u1 | DSA-4714-1 |
| Debian 10 | firefox-esr | 68.8.0esr-1~deb10u1 | DSA-4678-1 |
| Debian 10 | thunderbird | 1:68.8.0-1~deb10u1 | DSA-4683-1 |
| Debian 9 | firefox-esr | 68.8.0esr-1~deb9u1 | DSA-4678-1 |
| Debian 9 | thunderbird | 1:68.8.0-1~deb9u1 | DSA-4683-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 8 | firefox-esr | 68.8.0esr-1~deb8u1 | DLA-2205-1 |
| Debian 8 | thunderbird | 1:68.8.0-1~deb8u1 | DLA-2206-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | firefox | 76.0+build2-0ubuntu0.20.04.1 | USN-4353-1 |
| Ubuntu 20.04 LTS | mozjs52 +1 | No fix yet | — |
| Ubuntu 20.04 LTS | thunderbird | 1:68.8.0+build2-0ubuntu0.20.04.2 | USN-4373-1 |
| Ubuntu 18.04 LTS | chromium-browser | 81.0.4044.138-0ubuntu0.18.04.1 | — |
| Ubuntu 18.04 LTS | firefox | 76.0+build2-0ubuntu0.18.04.1 | USN-4353-1 |
| Ubuntu 18.04 LTS | mozjs38 +1 | No fix yet | — |
| Ubuntu 18.04 LTS | thunderbird | 1:68.8.0+build2-0ubuntu0.18.04.2 | USN-4373-1 |
| Ubuntu 16.04 LTS | chromium-browser | 81.0.4044.138-0ubuntu0.16.04.1 | — |
| Ubuntu 16.04 LTS | firefox | 76.0+build2-0ubuntu0.16.04.1 | USN-4353-1 |
| Ubuntu 16.04 LTS | thunderbird | 1:68.8.0+build2-0ubuntu0.16.04.2 | USN-4373-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | firefox +1 | 68.8.0-1.el8_2 | RHSA-2020:2046, RHSA-2020:2031 |
| RHEL 7 | firefox +1 | 68.8.0-1.el7_8 | RHSA-2020:2050, RHSA-2020:2037 |
| RHEL 6 | chromium-browser | 81.0.4044.138-1.el6_10 | RHSA-2020:2064 |
| RHEL 6 | firefox +1 | 68.8.0-1.el6_10 | RHSA-2020:2049, RHSA-2020:2036 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.1 EUS | firefox +1 | 68.8.0-1.el8_1 | RHSA-2020:2047, RHSA-2020:2032 |
| RHEL 8.0 E4S | firefox +1 | 68.8.0-1.el8_0 | RHSA-2020:2048, RHSA-2020:2033 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | MozillaFirefox | 68.8.0-3.87.1 | SUSE-SU-2020:1209-1 |
| SLES 15 SP1 | MozillaThunderbird | 68.8.0-3.80.2 | SUSE-SU-2020:1225-1 |
| SLES 12 SP5 | MozillaFirefox | 68.8.0-109.119.1 | SUSE-SU-2020:1218-1 |
| SLES 12 SP4 | MozillaFirefox | 68.8.0-109.119.1 | SUSE-SU-2020:1218-1 |
| SLES 12 SP3 | MozillaFirefox | 68.8.0-109.119.1 | SUSE-SU-2020:1218-1 |
| SLES 12 SP2 | MozillaFirefox | 68.8.0-109.119.1 | SUSE-SU-2020:1218-1 |
Show 13 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | MozillaFirefox | 68.8.0-109.119.1 | SUSE-SU-2020:1218-1 |
| SLES 11 SP4 | MozillaFirefox | 68.8.0-78.73.1 | SUSE-SU-2020:14359-1 |
| SLES for SAP 12 SP5 | MozillaFirefox | 68.8.0-109.119.1 | SUSE-SU-2020:1218-1 |
| SLES for SAP 12 SP4 | MozillaFirefox | 68.8.0-109.119.1 | SUSE-SU-2020:1218-1 |
| SLES for SAP 12 SP3 | MozillaFirefox | 68.8.0-109.119.1 | SUSE-SU-2020:1218-1 |
| SLES for SAP 12 SP2 | MozillaFirefox | 68.8.0-109.119.1 | SUSE-SU-2020:1218-1 |
| SLES for SAP 12 SP1 | MozillaFirefox | 68.8.0-109.119.1 | SUSE-SU-2020:1218-1 |
| SUSE Package Hub 15 SP1 | chromium | 81.0.4044.138-bp151.3.82.2 | openSUSE-SU-2020:0648-1 |
| SUSE OpenStack Cloud Crowbar 8 | MozillaFirefox | 68.8.0-109.119.1 | SUSE-SU-2020:1218-1 |
| SUSE OpenStack Cloud 8 | MozillaFirefox | 68.8.0-109.119.1 | SUSE-SU-2020:1218-1 |
| SUSE OpenStack Cloud 7 | MozillaFirefox | 68.8.0-109.119.1 | SUSE-SU-2020:1218-1 |
| SUSE HPE Helion OpenStack 8 | MozillaFirefox | 68.8.0-109.119.1 | SUSE-SU-2020:1218-1 |
| SUSE Enterprise Storage 5 | MozillaFirefox | 68.8.0-109.119.1 | SUSE-SU-2020:1218-1 |
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 | chromium | 93.0.4577.82-1.1 | openSUSE-SU-2024:12948-1, openSUSE-SU-2024:10681-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
| openSUSE Leap 15.2 | opera | 68.0.3618.104-lp152.2.6.1 | openSUSE-SU-2020:0917-1 |
| openSUSE Leap 15.1 | MozillaFirefox | 68.8.0-lp151.2.45.1 | openSUSE-SU-2020:0621-1 |
| openSUSE Leap 15.1 | MozillaThunderbird | 68.8.0-lp151.2.38.2 | openSUSE-SU-2020:0643-1 |
| openSUSE Leap 15.1 | chromium | 81.0.4044.138-lp151.2.88.1 | openSUSE-SU-2020:0620-1 |
| openSUSE Leap 15.1 | opera | 68.0.3618.104-lp151.2.18.1 | openSUSE-SU-2020:0709-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | librewolf | 76.0-r0 | — |
| Alpine v3.23 | firefox +1 | 76.0-r0 | — |
| Alpine v3.23 | firefox-esr +1 | 68.8.0-r0 | — |
| Alpine v3.22 | firefox +1 | 76.0-r0 | — |
| Alpine v3.22 | firefox-esr +1 | 68.8.0-r0 | — |
| Alpine v3.21 | firefox +1 | 76.0-r0 | — |
| Alpine v3.21 | firefox-esr +1 | 68.8.0-r0 | — |
| Alpine v3.20 | firefox | 76.0-r0 | — |
| Alpine v3.20 | firefox-esr +1 | 68.8.0-r0 | — |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | firefox | 76.0-r0 | — |
| Alpine v3.19 | firefox-esr +1 | 68.8.0-r0 | — |
| Alpine v3.18 | firefox | 76.0-r0 | — |
| Alpine v3.18 | firefox-esr +1 | 68.8.0-r0 | — |
| Alpine v3.17 | firefox | 76.0-r0 | — |
| Alpine v3.17 | firefox-esr +1 | 68.8.0-r0 | — |
| Alpine v3.16 | firefox | 76.0-r0 | — |
| Alpine v3.16 | firefox-esr +1 | 68.8.0-r0 | — |
| Alpine v3.15 | firefox | 76.0-r0 | — |
| Alpine v3.15 | firefox-esr | 68.8.0-r0 | — |
| Alpine v3.14 | firefox | 76.0-r0 | — |
| Alpine v3.14 | firefox-esr | 68.8.0-r0 | — |
| Alpine v3.13 | firefox | 76.0-r0 | — |
| Alpine v3.13 | firefox-esr | 68.8.0-r0 | — |
| Alpine v3.12 | firefox | 76.0-r0 | — |
| Alpine v3.12 | mozjs68 +1 | 68.8.0-r0 | — |
| Alpine v3.11 | firefox-esr | 68.8.0-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | thunderbird | 68.8.0-1.amzn2 | ALAS2-2020-1429 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | firefox +1 | 68.8.0-1.0.1.el8_2 | ELSA-2020-2046, ELSA-2020-2031 |
| Oracle Linux 7 | firefox +1 | 68.8.0-1.0.1.el7_8 | ELSA-2020-2050, ELSA-2020-2037 |
Advisories 38
- RHSA-2020:2064 Red Hat Security Advisory: chromium-browser security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2020:2050 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2020:2049 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2020:2048 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2020:2046 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2020:2047 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2020:2036 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2020:2037 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2020:2033 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2020:2031 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2020:2032 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-4373-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-4353-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4678-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-4683-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-4714-1 chromium - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2206-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2205-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2020:0709-1 Security update for opera SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:1209-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:1218-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:0621-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:0917-1 Security update for opera SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10681-1 chromedriver-93.0.4577.82-1.1 on GA media 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-2020:0620-1 Security update for chromium SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:1225-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12948-1 ungoogled-chromium-113.0.5672.92-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:0648-1 Security update for chromium 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
- SUSE-SU-2020:14359-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:0643-1 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
- ALAS2-2020-1429 Critical: thunderbird security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · May 20, 2020
- ELSA-2020-2046 Critical: thunderbird security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 12, 2020
- ELSA-2020-2050 Critical: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · May 12, 2020
- ELSA-2020-2031 Critical: firefox security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 9, 2020
- ELSA-2020-2037 Critical: firefox security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · May 7, 2020
References
- https://www.mozilla.org/security/advisories/mfsa2020-18/
- https://www.mozilla.org/security/advisories/mfsa2020-16/
- https://www.mozilla.org/security/advisories/mfsa2020-17/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1632241
- USN-4373-1 vendor-advisory
- https://security.gentoo.org/glsa/202005-03
- https://security.gentoo.org/glsa/202005-04
- DSA-4714 vendor-advisory
- openSUSE-SU-2020:0917 vendor-advisory
- http://packetstormsecurity.com/files/158480/usrsctp-Stack-Buffer-Overflow.html