CVE-2017-5386 Information

Description

WebExtension scripts can use the \data:\ protocol to affect pages loaded by other web extensions using this protocol leading to potential data disclosure or privilege escalation in affected extensions. This vulnerability affects Firefox ESR 45.7 and Firefox 51.

CVSS Vector

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

Reference

http://rhn.redhat.com/errata/RHSA-2017-0190.html http://www.securityfocus.com/bid/95769 http://www.securitytracker.com/id/1037693 https://bugzilla.mozilla.org/show_bug.cgi?id=1319070 https://security.gentoo.org/glsa/201702-22 https://www.debian.org/security/2017/dsa-3771 https://www.mozilla.org/security/advisories/mfsa2017-01/ https://www.mozilla.org/security/advisories/mfsa2017-02/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

LOW

Base Severity

7.3