cve/2017/CVE-2017-5448.md

CVE-2017-5448

Description

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.

POC

Reference

• https://bugzilla.mozilla.org/show_bug.cgi?id=1346648
• https://www.mozilla.org/security/advisories/mfsa2017-12/

Github

No PoCs found on GitHub currently.