CVE-2018-5163 Information

Description

If a malicious attacker has used another vulnerability to gain full control over a content process they may be able to replace the alternate data resources stored in the JavaScript Start-up Bytecode Cache (JSBC) for other JavaScript code. If the parent process then runs this replaced code the executed script would be run with the parent process’ privileges escaping the sandbox on content processes. This vulnerability affects Firefox 60.

CVSS Vector

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

Reference

http://www.securityfocus.com/bid/104139 http://www.securitytracker.com/id/1040896 https://bugzilla.mozilla.org/show_bug.cgi?id=1426353 https://usn.ubuntu.com/3645-1/ https://www.mozilla.org/security/advisories/mfsa2018-11/

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.1