Rapid7 Vulnerability & Exploit Database

MFSA2021-09 Thunderbird: Security Vulnerabilities fixed in Thunderbird 78.8 (CVE-2021-23969)

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

MFSA2021-09 Thunderbird: Security Vulnerabilities fixed in Thunderbird 78.8 (CVE-2021-23969)

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:P/I:N/A:N)
Published
02/23/2021
Created
02/25/2021
Added
02/24/2021
Modified
03/08/2021

Description

As specified in the W3C Content Security Policy draft, when creating a violation report, "User agents need to ensure that the source file is the URL requested by the page, pre-redirects. If that’s not possible, user agents need to strip the URL down to an origin to avoid unintentional leakage." Under certain types of redirects, Firefox incorrectly set the source file to be the destination of the redirects. This was fixed to be the redirect destination's origin. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.

Solution(s)

  • mozilla-thunderbird-upgrade-78_8

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

;