CVE-2020-15646
Publication date 8 October 2020
Last updated 25 August 2025
Ubuntu priority
Description
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| thunderbird | 20.04 LTS focal |
Fixed 1:68.10.0+build1-0ubuntu0.20.04.1
|
| 18.04 LTS bionic |
Fixed 1:68.10.0+build1-0ubuntu0.18.04.1
|
|
| 16.04 LTS xenial |
Fixed 1:68.10.0+build1-0ubuntu0.16.04.1
|
|
| 14.04 LTS trusty | Not in release |
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
5.9 · Medium
|
| 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 |