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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.
| 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 firefoxUpgrade firefox-debuginfo | Apr 21, 2017 | Apr 20, 2017 |
| Debian | — | Upgrade firefox-esr | Apr 20, 2017 | Apr 20, 2017 |
| Freebsd | — | Upgrade linux-thunderbirdUpgrade libxulUpgrade linux-firefoxUpgrade seamonkeyUpgrade linux-seamonkeyUpgrade firefox-esrUpgrade firefoxUpgrade thunderbird | 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 53.0Upgrade to the latest version of Mozilla Firefox | Jul 12, 2018 | Jun 11, 2018 |
| Mfsa2017 11 | — | Upgrade to Mozilla Firefox ESR version 45.9Upgrade to the latest version of Mozilla Firefox | Apr 20, 2017 | Apr 19, 2017 |
| Mfsa2017 12 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 52.1 | Apr 20, 2017 | Apr 19, 2017 |
| Oracle Solaris | — | Upgrade 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 web/browser/firefox/plugin/firefox-java 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-translations-commonUpgrade libfreebl3Upgrade mozilla-nssUpgrade libsoftokn3-32bitUpgrade MozillaFirefox-translations-otherUpgrade mozilla-nspr-develUpgrade java-1_8_0-openjdk-develUpgrade MozillaFirefox-develUpgrade libsoftokn3Upgrade mozilla-nss-sysinit-32bitUpgrade mozilla-nss-develUpgrade java-1_8_0-openjdk-demoUpgrade mozilla-nss-sysinitUpgrade mozilla-nspr-32bitUpgrade java-1_8_0-openjdk-headlessUpgrade mozilla-nss-toolsUpgrade mozilla-nsprUpgrade libfreebl3-x86Upgrade mozilla-nss-certsUpgrade mozillafirefox-branding-sleUpgrade libfreebl3-hmacUpgrade mozilla-nspr-x86Upgrade MozillaFirefox-debugsourceUpgrade libsoftokn3-hmacUpgrade mozillafirefox-branding-upstreamUpgrade libfreebl3-32bitUpgrade mozilla-nss-certs-32bitUpgrade mozilla-nss-x86Upgrade mozilla-nss-32bitUpgrade java-1_8_0-openjdkUpgrade MozillaFirefoxUpgrade libfreebl3-hmac-32bitUpgrade MozillaFirefox-debuginfoUpgrade libsoftokn3-hmac-32bitUpgrade libsoftokn3-x86Upgrade MozillaFirefox-translationsUpgrade mozillafirefox-buildsymbols | May 4, 2017 | Apr 20, 2017 |
| Ubuntu | — | Upgrade firefox | Apr 21, 2017 | Apr 20, 2017 |
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