CVE-2019-11705

Publication date 14 June 2019

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

A flaw in Thunderbird's implementation of iCal causes a stack buffer overflow in icalrecur_add_bydayrules when processing certain email messages, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.7.1.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
thunderbird	19.04 disco	Fixed 1:60.7.1+build1-0ubuntu0.19.04.1
	18.10 cosmic	Fixed 1:60.7.1+build1-0ubuntu0.18.10.1
	18.04 LTS bionic	Fixed 1:60.7.1+build1-0ubuntu0.18.04.1
	16.04 LTS xenial	Fixed 1:60.7.1+build1-0ubuntu0.16.04.1
	14.04 LTS trusty	Not in release

Severity score breakdown

Parameter	Value
Base score	9.8 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-4028-1
Thunderbird vulnerabilities
20 June 2019