Rapid7 Vulnerability & Exploit Database

MFSA2019-34 Firefox: Security vulnerabilities fixed in - Firefox 70 (CVE-2019-11763)

Back to Search

MFSA2019-34 Firefox: Security vulnerabilities fixed in - Firefox 70 (CVE-2019-11763)

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
Published
10/22/2019
Created
10/24/2019
Added
10/23/2019
Modified
01/16/2020

Description

Failure to correctly handle null bytes when processing HTML entities resulted in Firefox incorrectly parsing these entities. This could have led to HTML comment text being treated as HTML which could have led to XSS in a web application under certain conditions. It could have also led to HTML entities being masked from filters - enabling the use of entities to mask the actual characters of interest from filters. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

Solution(s)

  • mozilla-firefox-upgrade-70_0

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;