A potential integer overflow in the "DoCrypt" function of WebCrypto was identified. If a means was found of exploiting it, it could result in an out-of-bounds write. This vulnerability affects Firefox < 58.Referenceshttp://www.securitytracker.com/id/1040270https://bugzilla.mozilla.org/show_bug.cgi?id=1413841https://usn.ubuntu.com/3544-1/http://www.securityfocus.com/bid/102786https://www.mozilla.org/security/advisories/mfsa2018-02/
