CVE-2019-19722 : In Dovecot before 2.3.9.2, an attacker can crash a push-notification driver with

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.

Published 2019-12-13 17:15:13

Updated 2023-02-02 02:26:03

Source MITRE

View at NVD, CVE.org

Vulnerability category: Memory Corruption

Products affected by CVE-2019-19722

Dovecot » Dovecot
Versions before (<) 2.3.9.2
cpe:2.3:a:dovecot:dovecot:*:*:*:*:*:*:*:*
Matching versions
Fedoraproject » Fedora » Version: 31
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
Matching versions
Fedoraproject » Fedora » Version: 30
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2019-19722

EPSS FAQ

0.55%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 77 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2019-19722

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:N/A:P	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
5.3	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L	3.9	1.4	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: Low

CWE ids for CVE-2019-19722

CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2019-19722

http://www.openwall.com/lists/oss-security/2019/12/13/3

oss-security - Re: CVE-2019-19722: Critical vulnerability in Dovecot
Mailing List;Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4OZCJ3RBA4WIYGN7SOV4TW2AIHXPZATK/

[SECURITY] Fedora 31 Update: dovecot-2.3.9.2-1.fc31 - package-announce - Fedora Mailing-Lists
Mailing List;Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6PPB7PG5BM3MC5ZF2KHQ3UR7CZIO42BB/

[SECURITY] Fedora 30 Update: dovecot-2.3.9.2-1.fc30 - package-announce - Fedora Mailing-Lists
Mailing List;Third Party Advisory
https://dovecot.org/list/dovecot-news/2019-December/000428.html

[Dovecot-news] CVE-2019-19722: Critical vulnerability in Dovecot
Vendor Advisory
https://dovecot.org/pipermail/dovecot-news/2019-December/000428.html

[Dovecot-news] CVE-2019-19722: Critical vulnerability in Dovecot
Vendor Advisory
https://dovecot.org/security.html

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Vulnerability Details : CVE-2019-19722

Products affected by CVE-2019-19722

Exploit prediction scoring system (EPSS) score for CVE-2019-19722

CVSS scores for CVE-2019-19722

CWE ids for CVE-2019-19722

References for CVE-2019-19722