Centos Linux: CVE-2020-26961: Important: thunderbird security update (Multiple Advisories)
4
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
11/30/2020
12/02/2020
12/01/2020
12/14/2020
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)
- centos-upgrade-firefox
- centos-upgrade-firefox-debuginfo
- centos-upgrade-firefox-debugsource
- centos-upgrade-thunderbird
- centos-upgrade-thunderbird-debuginfo
- centos-upgrade-thunderbird-debugsource
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