CVE-2019-9802 Information

Description

If a Sandbox content process is compromised it can initiate an FTP download which will then use a child process to render the downloaded data. The downloaded data can then be passed to the Chrome process with an arbitrary file length supplied by an attacker bypassing sandbox protections and allow for a potential memory read of adjacent data from the privileged Chrome process which may include sensitive data. This vulnerability affects Firefox 66.

CVSS Vector

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

Reference

https://bugzilla.mozilla.org/show_bug.cgi?id=1415508 https://www.mozilla.org/security/advisories/mfsa2019-07/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

7.5