Medium severity · published Dec 13, 2019
CVE-2019-19722
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
5.3
CVSS
2.5%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.5% · higher than 84% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DO
Dovecot · Dovecot
before 2.3.9.2 · source: NVD
FE
Fedora · Fedoraproject
30; 31 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-19722
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-19722
Mailing List
http://www.openwall.com/lists/oss-security/2019/12/13/3
Vendor Advisory
https://dovecot.org/list/dovecot-news/2019-December/000428.html
Vendor Advisory
https://dovecot.org/pipermail/dovecot-news/2019-December/000428.html
Vendor Advisory
https://dovecot.org/security.html
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OZCJ3RBA4WIYGN7SOV4TW2AIHXPZATK/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6PPB7PG5BM3MC5ZF2KHQ3UR7CZIO42BB/
More from Dovecot
9.8
CVE-2019-11500
In Dovecot before 2.2.36.4 and 2.3.x before 2.3.7.2 (and Pigeonhole before 0.5.7.2), protocol processing can fail for quoted strings
9.1
CVE-2026-27851
When safe filter is used with variable expansion, all following pipelines on the same string are incorrectly interpreted as safe too, enabling unsafe data to be unescaped
8.8
CVE-2022-30550
An issue was discovered in the auth component in Dovecot 2.2 and 2.3 before 2.3.20
8.2
CVE-2026-24031
Dovecot SQL based authentication can be bypassed when auth_username_chars is cleared by admin
7.8
CVE-2019-7524
In Dovecot before 2.2.36.3 and 2.3.x before 2.3.5.1, a local attacker can cause a buffer overflow in the indexer-worker process, which can be used to elevate to root