Related Vulnerabilities: CVE-2017-7799  

A security issue has been found in Firefox < 55.0. JavaScript in the about:webrtc page is not sanitized properly being being assigned to innerHTML. Data on this page is supplied by WebRTC usage and is not under third-party control, making this difficult to exploit, but the vulnerability could possibly be used for a cross-site scripting (XSS) attack.

Severity Medium

Remote Yes

Type Cross-site scripting

Description

A security issue has been found in Firefox < 55.0. JavaScript in the about:webrtc page is not sanitized properly being being assigned to innerHTML. Data on this page is supplied by WebRTC usage and is not under third-party control, making this difficult to exploit, but the vulnerability could possibly be used for a cross-site scripting (XSS) attack.

AVG-375 firefox 54.0.1-1 55.0-1 Critical Fixed

10 Aug 2017 ASA-201708-3 AVG-375 firefox Critical multiple issues

https://www.mozilla.org/en-US/security/advisories/mfsa2017-18/#CVE-2017-7799
https://bugzilla.mozilla.org/show_bug.cgi?id=1372509