CVE-2019-10691
7.5
HIGH
CVSS 3.1
EPSS 1.3%
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.
How to fix CVE-2019-10691
To remediate CVE-2019-10691, upgrade the affected package to a fixed version below.
- Alpine/dovecot—upgrade to 2.3.6-r0 or later
- Debian/dovecot—upgrade to 1:2.3.4.1-4 or later
Is CVE-2019-10691 being exploited?
Low — EPSS is 1.3%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2.3.6-r0
- from 0, < 1:2.3.4.1-4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |