CVE-2019-10691
First published: Wed Apr 24 2019(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Dovecot | <2.3.5.2 | |
| SUSE Linux | =15.0 |
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00000.html
- http://www.openwall.com/lists/oss-security/2019/04/18/3
- https://dovecot.org/list/dovecot-news/2019-April/000406.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QHFZ5OWRIZGIWZJ5PTNVWWZNLLNH4XYS/
- https://security.gentoo.org/glsa/201908-29
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QHFZ5OWRIZGIWZJ5PTNVWWZNLLNH4XYS/
Frequently Asked Questions
What is CVE-2019-10691?
CVE-2019-10691 is a vulnerability in Dovecot, a popular email server software, which allows attackers to crash the authentication service by attempting to authenticate with an invalid UTF-8 sequence as the username.
What is the severity of CVE-2019-10691?
CVE-2019-10691 has a severity rating of high, with a CVSS score of 7.5.
How does CVE-2019-10691 affect Dovecot?
CVE-2019-10691 affects versions of Dovecot before 2.3.5.2, potentially allowing attackers to crash the authentication service.
How can I fix CVE-2019-10691?
To fix CVE-2019-10691, upgrade to Dovecot version 2.3.5.2 or later.
Where can I find more information about CVE-2019-10691?
You can find more information about CVE-2019-10691 on the following references: [http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00000.html](http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00000.html), [http://www.openwall.com/lists/oss-security/2019/04/18/3](http://www.openwall.com/lists/oss-security/2019/04/18/3), [https://dovecot.org/list/dovecot-news/2019-April/000406.html](https://dovecot.org/list/dovecot-news/2019-April/000406.html)
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/references
- agent/last-modified-date
- agent/author
- agent/severity
- agent/first-publish-date
- agent/event
- agent/description
- agent/source
- agent/softwarecombine
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- agent/software-canonical-lookup-request
- vendor/dovecot
- canonical/dovecot
- vendor/opensuse
- canonical/suse linux
- version/suse linux/15.0