CVE-2017-7834 Information

Description

A \data:\ URL loaded in a new tab did not inherit the Content Security Policy (CSP) of the original page allowing for bypasses of the policy including the execution of JavaScript. In prior versions when \data:\ documents also inherited the context of the original page this would allow for potential cross-site scripting (XSS) attacks. This vulnerability affects Firefox 57.

CVSS Vector

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

Reference

http://www.securityfocus.com/bid/101832 http://www.securitytracker.com/id/1039803 https://bugzilla.mozilla.org/show_bug.cgi?id=1358009 https://www.mozilla.org/security/advisories/mfsa2017-24/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

CHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

NONE

Base Severity

6.1