CVE-2019-11739

Publication date 27 September 2019

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Encrypted S/MIME parts in a crafted multipart/alternative message can leak plaintext when included in a a HTML reply/forward. This vulnerability affects Thunderbird < 68.1 and Thunderbird < 60.9.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
thunderbird	19.10 eoan	Fixed 1:68.1.0+build3-0ubuntu1
	19.04 disco	Fixed 1:60.9.0+build1-0ubuntu0.19.04.1
	18.04 LTS bionic	Fixed 1:60.9.0+build1-0ubuntu0.18.04.1
	16.04 LTS xenial	Fixed 1:60.9.0+build1-0ubuntu0.16.04.2
	14.04 LTS trusty	Not in release

Severity score breakdown

Parameter	Value
Base score	6.5 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity impact	None
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)

USN-4150-1
Thunderbird vulnerabilities
8 October 2019