Rapid7 Vulnerability & Exploit Database

Amazon Linux AMI 2: CVE-2020-26961: Security patch for thunderbird (ALAS-2021-1586)

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

Amazon Linux AMI 2: CVE-2020-26961: Security patch for thunderbird (ALAS-2021-1586)

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
Published
12/09/2020
Created
01/09/2021
Added
01/08/2021
Modified
09/30/2022

Description

When DNS over HTTPS is in use, it intentionally filters RFC1918 and related IP ranges from the responses as these do not make sense coming from a DoH resolver. However when an IPv4 address was mapped through IPv6, these addresses were erroneously let through, leading to a potential DNS Rebinding attack. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.

Solution(s)

  • amazon-linux-ami-2-upgrade-thunderbird
  • amazon-linux-ami-2-upgrade-thunderbird-debuginfo

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

;