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:

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

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products past their end of life and not receiving proactive updates anymore.
SUSE Linux Enterprise High Performance Computing 15 dovecot23 Released
SUSE Linux Enterprise Module for Server Applications 15 dovecot23 Released
SUSE Linux Enterprise Server 15 dovecot23 Released
SUSE Linux Enterprise Server for SAP Applications 15 dovecot23 Released

SUSE Timeline for this CVE

CVE page created: Mon Apr 15 11:54:01 2019
CVE page last modified: Thu Dec 11 16:08:26 2025