CVE-2019-19722
Published: 13 December 2019
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.
Notes
| Author | Note |
|---|---|
| alexmurray | Only affects 2.3.9 according to upstream - original fix was incomplete so required extra fix in 2.3.9.2 release |
Mitigation
Disable push notifications
Priority
Status
| Package | Release | Status |
|---|---|---|
|
dovecot Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(1:2.2.33.2-1ubuntu4.5)
|
| disco |
Not vulnerable
(1:2.3.4.1-1ubuntu2.4)
|
|
| eoan |
Not vulnerable
(1:2.3.4.1-5ubuntu3)
|
|
| trusty |
Not vulnerable
(1:2.2.9-1ubuntu2.6)
|
|
| upstream |
Released
(2.3.9.2)
|
|
| xenial |
Not vulnerable
(1:2.2.22-1ubuntu2.12)
|
|
|
Patches: upstream: https://github.com/dovecot/core/commit/393a8cabf4dad893bf2ec60bf96cfde7a0c58432 upstream: https://github.com/dovecot/core/commit/1307766b6f5d97341a47376657d342bcefd10f1b upstream: https://github.com/dovecot/core/commit/82c948db496cdc2d25b40eb8613c1eaa5c622384 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.3 |
| 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 |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19722
- https://github.com/dovecot/core/commit/393a8cabf4dad893bf2ec60bf96cfde7a0c58432
- https://github.com/dovecot/core/commit/1307766b6f5d97341a47376657d342bcefd10f1b
- https://github.com/dovecot/core/commit/82c948db496cdc2d25b40eb8613c1eaa5c622384
- NVD
- Launchpad
- Debian