CVE-2020-26961 | BDVDB-2026-145683 Detail

MozillaFirefox

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.

Impact#

No impact statement in the source data.

Weaknesses#

No weakness recorded in the source data.

References#

https://bugzilla.mozilla.org/show_bug.cgi?id=1672528
https://www.mozilla.org/security/advisories/mfsa2020-50/
https://www.mozilla.org/security/advisories/mfsa2020-52/
https://www.mozilla.org/security/advisories/mfsa2020-51/

Exploit#

No public exploit known

History#

Version 12020-12-09Record published in the CVE List.
Version 22024-08-04Most recent update recorded in the CVE List.