Ubuntu.comUB:CVE-2015-3420CVE-2015-3420
4.3 Medium
CVSS2
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
5.9 Medium
CVSS3
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
0.021 Low
EPSS
Percentile
89.3%
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. |
Related
4.3 Medium
CVSS2
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
5.9 Medium
CVSS3
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
0.021 Low
EPSS
Percentile
89.3%