CVE-2015-3420

2017-09-1900:00:00

ubuntu.com

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS3

5.9

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.03

Percentile

91.0%

JSON

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.