An out-of-bounds write in "ClearKeyDecryptor" while decrypting some Clearkey-encrypted media content. The "ClearKeyDecryptor" code runs within the Gecko Media Plugin (GMP) sandbox. If a second mechanism is found to escape the sandbox, this vulnerability allows for the writing of arbitrary data within memory, resulting in a potentially exploitable crash. This vulnerability affects Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.
CVSS Details
- CVSS 3.1 Base Score: 8.6
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade firefox-esr | Nov 8, 2019 | Jun 11, 2018 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Jun 11, 2018 |
| Centos_linux | — | Upgrade firefox-debuginfoUpgrade firefox | Apr 21, 2017 | Apr 20, 2017 |
| Debian | — | Upgrade firefox-esr | Apr 20, 2017 | Apr 20, 2017 |
| Freebsd | — | Upgrade libxulUpgrade linux-thunderbirdUpgrade seamonkeyUpgrade firefoxUpgrade thunderbirdUpgrade firefox-esrUpgrade linux-firefoxUpgrade linux-seamonkey | Apr 20, 2017 | Apr 19, 2017 |
| Gentoo Linux | — | Upgrade www-client/firefox-bin.Upgrade www-client/firefox. | Feb 20, 2018 | Feb 20, 2018 |
| Mfsa2017 10 | — | Upgrade to Mozilla Firefox version 53.0 | Jul 12, 2018 | Jun 11, 2018 |
| Mfsa2017 11 | — | Upgrade to Mozilla Firefox ESR version 45.9 | Apr 20, 2017 | Apr 19, 2017 |
| Mfsa2017 12 | — | Upgrade to Mozilla Firefox ESR version 52.1 | Apr 20, 2017 | Apr 19, 2017 |
| Oracle Solaris | — | Upgrade web/browser/firefox/plugin/firefox-java to version 45.9.0-0.175.3.20.0.3.0 on Solaris 11.3Upgrade web/data/firefox-bookmarks to version 45.9.0-0.175.3.20.0.3.0 on Solaris 11.3Upgrade web/browser/firefox to version 45.9.0-0.175.3.20.0.3.0 on Solaris 11.3Upgrade entire/ to version 11.4-11.4.0.0.1.15.0 on Solaris 11.4 | May 29, 2017 | May 29, 2017 |
| Oracle_linux | — | Upgrade firefox | Apr 20, 2017 | Apr 19, 2017 |
| Redhat_linux | — | Upgrade firefox-debuginfoUpgrade firefoxNo solution exists | Apr 20, 2017 | Apr 20, 2017 |
| Suse | — | Upgrade mozillafirefox-develUpgrade mozillafirefox-translations-commonUpgrade libfreebl3Upgrade mozilla-nssUpgrade mozillafirefox-translations-otherUpgrade mozilla-nsprUpgrade mozilla-nspr-develUpgrade java-1_8_0-openjdk-demoUpgrade java-1_8_0-openjdk-headlessUpgrade mozilla-nss-sysinit-32bitUpgrade mozilla-nss-sysinitUpgrade libsoftokn3-32bitUpgrade mozilla-nspr-32bitUpgrade libsoftokn3Upgrade java-1_8_0-openjdk-develUpgrade mozilla-nss-toolsUpgrade mozilla-nss-develUpgrade mozillafirefox-branding-sleUpgrade mozilla-nss-32bitUpgrade mozillafirefox-buildsymbolsUpgrade libfreebl3-x86Upgrade mozilla-nspr-x86Upgrade MozillaFirefox-translationsUpgrade libsoftokn3-hmac-32bitUpgrade mozillafirefoxUpgrade MozillaFirefox-debuginfoUpgrade mozilla-nss-certsUpgrade libsoftokn3-x86Upgrade MozillaFirefox-debugsourceUpgrade libfreebl3-hmacUpgrade libsoftokn3-hmacUpgrade mozillafirefox-branding-upstreamUpgrade libfreebl3-hmac-32bitUpgrade java-1_8_0-openjdkUpgrade mozilla-nss-certs-32bitUpgrade libfreebl3-32bitUpgrade mozilla-nss-x86 | May 4, 2017 | Apr 20, 2017 |
| Ubuntu | — | Upgrade firefox | Apr 21, 2017 | Apr 20, 2017 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub