CVE-2019-11499 describes a denial-of-service vulnerability affecting Dovecot IMAP Server versions 2.3.3 through 2.3.5.2, as well as various Dovecot packages for Fedora and openSUSE. An unauthenticated attacker can crash the server by attempting an AUTH PLAIN authentication over a TLS-secured channel with an unacceptable message. This vulnerability has a CVSS score of 7.5 (HIGH), indicating a network-based attack with low complexity leading to high availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 2.3.3, <= 2.3.5.2CPE matchmatch criteria | cpe:2.3:a:dovecot:dovecot:*:*:*:*:*:*:*:* | ||
29CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:* | ||
30CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* | ||
15.0CPE matchmatch criteria | cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:* | ||
15.1CPE matchmatch criteria | cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
dovecot: unacceptable authentication message in AUTH PLAIN over TLS leads to crash and possible DoS
Apr 30, 2019Submission-login crashes when authentication is started over TLS secured channel and invalid authentication message is sent
Apr 30, 2019Submission-login crashes when authentication is started over TLS secured channel and invalid authentication message is sent
Apr 30, 2019Submission-login crashes when authentication is started over TLS secured channel and invalid authentication message is sent
Apr 30, 2019Submission-login crashes when authentication is started over TLS secured channel and invalid authentication message is sent
Apr 30, 2019CVE-2019-11499: Submission-login crashes when authentication is started over TLS secured channel and invalid authentication message is sent
Apr 30, 2019Submission-login crashes when authentication is started over TLS secured channel and invalid authentication message is sent
Apr 30, 2019CVE-2019-11499: Submission-login crashes when authentication is started over TLS secured channel and invalid authentication message is sent
Apr 30, 2019