Impact: Moderate Public Date: 2019-04-30 CWE: CWE-617 Bugzilla: 1709240: CVE-2019-11499 dovecot: unacceptable authentication message in AUTH PLAIN over TLS leads to crash and possible DoS In the IMAP Server in Dovecot 2.3.3 through 2.3.5.2, the submission-login component crashes if AUTH PLAIN is attempted over a TLS secured channel with an unacceptable authentication message.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2019-11499 from the MITRE CVE dictionary dictionary and NIST NVD.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 7.5 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity Impact | None |
| Availability Impact | High |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 8 | dovecot | Not affected |
| Red Hat Enterprise Linux 7 | dovecot | Not affected |
| Red Hat Enterprise Linux 6 | dovecot | Not affected |
| Red Hat Enterprise Linux 5 | dovecot | Not affected |
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