CVE-2017-5448 Information

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.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

Reference

http://www.securityfocus.com/bid/97940 http://www.securitytracker.com/id/1038320 https://access.redhat.com/errata/RHSA-2017:1104 https://access.redhat.com/errata/RHSA-2017:1106 https://bugzilla.mozilla.org/show_bug.cgi?id=1346648 https://www.debian.org/security/2017/dsa-3831 https://www.mozilla.org/security/advisories/mfsa2017-10/ https://www.mozilla.org/security/advisories/mfsa2017-11/ https://www.mozilla.org/security/advisories/mfsa2017-12/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

HIGH

Base Severity

8.6