High severity · published Apr 24, 2019
CVE-2019-10691
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…
7.5
CVSS
2.8%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.8% · higher than 86% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DO
Dovecot · Dovecot
before 2.3.5.2 · source: NVD
LE
Leap · Opensuse
15.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-10691
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-10691
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00000.html
Mailing List
http://www.openwall.com/lists/oss-security/2019/04/18/3
Mailing List
https://dovecot.org/list/dovecot-news/2019-April/000406.html
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QHFZ5OWRIZGIWZJ5PTNVWWZNLLNH4XYS/
security.gentoo.org
https://security.gentoo.org/glsa/201908-29
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