Rapid7 Vulnerability & Exploit Database

MFSA2021-48 Firefox: Security Vulnerabilities fixed in Firefox 94 (CVE-2021-43532)

Free InsightVM Trial No Credit Card Necessary
Watch Demo See how it all works
Back to Search

MFSA2021-48 Firefox: Security Vulnerabilities fixed in Firefox 94 (CVE-2021-43532)

Severity
6
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:N)
Published
11/02/2021
Created
12/09/2021
Added
12/08/2021
Modified
12/13/2021

Description

The 'Copy Image Link' context menu action would copy the final image URL after redirects. By embedding an image that triggered authentication flows - in conjunction with a Content Security Policy that stopped a redirection chain in the middle - the final image URL could be one that contained an authentication token used to takeover a user account. If a website tricked a user into copy and pasting the image link back to the page, the page would be able to steal the authentication tokens. This was fixed by making the action return the original URL, before any redirects. This vulnerability affects Firefox < 94.

Solution(s)

  • mozilla-firefox-upgrade-94_0

References

insightVM

Advanced vulnerability management analytics and reporting.
Key Features
Free InsightVM Trial View All Features

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

;