CVE-2015-3420
Published: 19 September 2017
The ssl-proxy-openssl.c function in Dovecot before 2.2.17, when SSLv3 is disabled, allow remote attackers to cause a denial of service (login process crash) via vectors related to handshake failures.
Notes
| Author | Note |
|---|---|
| tyhicks | Thanks to Hanno's analysis on the dovecot list, I believe that the issue was introduced by http://hg.dovecot.org/dovecot-2.2/rev/09d3c9c6f0ad. That commit was first released in 2.2.14. |
Priority
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.9 |
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |