CVE-2019-19722

Publication date 13 December 2019

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

In Dovecot before 2.3.9.2, an attacker can crash a push-notification driver with a crafted email when push notifications are used, because of a NULL Pointer Dereference. The email must use a group address as either the sender or the recipient.

Read the notes from the security team

Mitigation

Disable push notifications

Status

Show unmaintained releases

Package	Ubuntu Release	Status
dovecot	19.10 eoan	Not affected
	19.04 disco	Not affected
	18.04 LTS bionic	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not affected

Notes

alexmurray

Only affects 2.3.9 according to upstream - original fix was incomplete so required extra fix in 2.3.9.2 release

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
dovecot	Upstream: 393a8ca Upstream: 1307766 Upstream: 82c948d

Severity score breakdown

Parameter	Value
Base score	5.3 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	Low
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L