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.
The product writes data past the end, or before the beginning, of the intended buffer.
| Link | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2017:1106 | third party advisory vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2017-12/ | vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2017-11/ | vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2017-10/ | vendor advisory |
| http://www.securityfocus.com/bid/97940 | vdb entry third party advisory |
| https://www.debian.org/security/2017/dsa-3831 | third party advisory vendor advisory |
| http://www.securitytracker.com/id/1038320 | vdb entry third party advisory |
| https://access.redhat.com/errata/RHSA-2017:1104 | third party advisory vendor advisory |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1346648 | issue tracking vendor advisory |