CVE-2019-10691 Common Vulnerabilities and Exposures

Upstream information

CVE-2019-10691 at MITRE

Description

The JSON encoder in Dovecot before 2.3.5.2 allows attackers to repeatedly crash the authentication service by attempting to authenticate with an invalid UTF-8 sequence as the username.

SUSE information

Overall state of this security issue: Does not affect SUSE products

CVSS v2 Scores
CVSS detail	National Vulnerability Database
Base Score	5
Vector	AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector	Network
Access Complexity	Low
Authentication	None
Confidentiality Impact	None
Integrity Impact	None
Availability Impact	Partial

CVSS v3 Scores
CVSS detail	National Vulnerability Database	SUSE
Base Score	7.5	7.5
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector	Network	Network
Attack Complexity	Low	Low
Privileges Required	None	None
User Interaction	None	None
Scope	Unchanged	Unchanged
Confidentiality Impact	None	None
Integrity Impact	None	None
Availability Impact	High	High
CVSSv3 Version	3	3

SUSE Bugzilla entry: 1132501 [RESOLVED / FIXED]

SUSE Security Advisories:

SUSE-SU-2019:0997-1, published Tue Apr 23 16:09:56 MDT 2019
openSUSE-SU-2019:1312-1, published Fri Dec 8 15:48:42 2023
openSUSE-SU-2025:14715-1, published Fri Jan 31 18:50:50 2025

List of released packages

Product(s)	Fixed package version(s)	References
SUSE Linux Enterprise High Performance Computing 15 SUSE Linux Enterprise Module for Server Applications 15 SUSE Linux Enterprise Server 15 SUSE Linux Enterprise Server for SAP Applications 15	`dovecot23 >= 2.3.3-4.13.1` `dovecot23-backend-mysql >= 2.3.3-4.13.1` `dovecot23-backend-pgsql >= 2.3.3-4.13.1` `dovecot23-backend-sqlite >= 2.3.3-4.13.1` `dovecot23-devel >= 2.3.3-4.13.1` `dovecot23-fts >= 2.3.3-4.13.1` `dovecot23-fts-lucene >= 2.3.3-4.13.1` `dovecot23-fts-solr >= 2.3.3-4.13.1` `dovecot23-fts-squat >= 2.3.3-4.13.1`	Patchnames: SUSE-SLE-Module-Server-Applications-15-2019-997
SUSE Linux Enterprise Server 16.0	`dovecot24 >= 2.4.1-160000.3.2` `dovecot24-backend-mysql >= 2.4.1-160000.3.2` `dovecot24-backend-pgsql >= 2.4.1-160000.3.2` `dovecot24-backend-sqlite >= 2.4.1-160000.3.2` `dovecot24-devel >= 2.4.1-160000.3.2` `dovecot24-fts >= 2.4.1-160000.3.2` `dovecot24-fts-solr >= 2.4.1-160000.3.2`	Patchnames: SUSE Linux Enterprise Server 16.0 GA dovecot24-2.4.1-160000.3.2
openSUSE Leap 15.0	`dovecot23 >= 2.3.3-lp150.11.1` `dovecot23-backend-mysql >= 2.3.3-lp150.11.1` `dovecot23-backend-pgsql >= 2.3.3-lp150.11.1` `dovecot23-backend-sqlite >= 2.3.3-lp150.11.1` `dovecot23-devel >= 2.3.3-lp150.11.1` `dovecot23-fts >= 2.3.3-lp150.11.1` `dovecot23-fts-lucene >= 2.3.3-lp150.11.1` `dovecot23-fts-solr >= 2.3.3-lp150.11.1` `dovecot23-fts-squat >= 2.3.3-lp150.11.1`	Patchnames: openSUSE-2019-1312
openSUSE Tumbleweed	`dovecot23 >= 2.3.16-1.6` `dovecot23-backend-mysql >= 2.3.16-1.6` `dovecot23-backend-pgsql >= 2.3.16-1.6` `dovecot23-backend-sqlite >= 2.3.16-1.6` `dovecot23-devel >= 2.3.16-1.6` `dovecot23-fts >= 2.3.16-1.6` `dovecot23-fts-lucene >= 2.3.16-1.6` `dovecot23-fts-solr >= 2.3.16-1.6` `dovecot23-fts-squat >= 2.3.16-1.6` `dovecot24 >= 2.4.0-1.1` `dovecot24-backend-mysql >= 2.4.0-1.1` `dovecot24-backend-pgsql >= 2.4.0-1.1` `dovecot24-backend-sqlite >= 2.4.0-1.1` `dovecot24-devel >= 2.4.0-1.1` `dovecot24-fts >= 2.4.0-1.1` `dovecot24-fts-flatcurve >= 2.4.0-1.1` `dovecot24-fts-solr >= 2.4.0-1.1`	Patchnames: openSUSE-Tumbleweed-2024-10726 openSUSE-Tumbleweed-2025-14715

SUSE Timeline for this CVE

CVE page created: Mon Apr 15 11:54:01 2019
CVE page last modified: Sun Nov 2 12:52:16 2025