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CVE-2020-15646

Published: 8 October 2020

If an attacker intercepts Thunderbird's initial attempt to perform automatic account setup using the Microsoft Exchange autodiscovery mechanism, and the attacker sends a crafted response, then Thunderbird sends username and password over https to a server controlled by the attacker. This vulnerability affects Thunderbird < 68.10.0.

Priority

Medium

Cvss 3 Severity Score

5.9

Score breakdown

Status

Package Release Status
thunderbird
Launchpad, Ubuntu, Debian
bionic
Released (1:68.10.0+build1-0ubuntu0.18.04.1)
focal
Released (1:68.10.0+build1-0ubuntu0.20.04.1)
trusty Does not exist

upstream
Released (1:68.10.0-1)
xenial
Released (1:68.10.0+build1-0ubuntu0.16.04.1)

Severity score breakdown

Parameter Value
Base score 5.9
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N