CVE-2019-10691
HIGHDovecot < 2.3.5.2 - Denial of Service via Invalid UTF-8 Username
Title source: llmDescription
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.
References (5)
Core 5
Core References
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2019/04/18/3
Mailing List, Vendor Advisory mailing-list
x_refsource_mlist
https://dovecot.org/list/dovecot-news/2019-April/000406.html
Mailing List, Third Party Advisory vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00000.html
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QHFZ5OWRIZGIWZJ5PTNVWWZNLLNH4XYS/
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/201908-29
Scores
CVSS v3
7.5
EPSS
0.0162
EPSS Percentile
82.1%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
Status
published
Products (2)
dovecot/dovecot
< 2.3.5.2
opensuse/leap
15.0
Published
Apr 24, 2019
Tracked Since
Feb 18, 2026