Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2011-4318

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
07/03/2013
Last modified:
11/04/2025

Description

Dovecot 2.0.x before 2.0.16, when ssl or starttls is enabled and hostname is used to define the proxy destination, does not verify that the server hostname matches a domain name in the subject's Common Name (CN) of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via a valid certificate for a different hostname.

Impact

Vector 2.0
AV:N/AC:M/Au:N/C:P/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 5.80 MEDIUM
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): None

Base Score 2.0
5.80
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:dovecot:dovecot:2.0.0:*:*:*:*:*:*:*
cpe:2.3:a:dovecot:dovecot:2.0.1:*:*:*:*:*:*:*
cpe:2.3:a:dovecot:dovecot:2.0.2:*:*:*:*:*:*:*
cpe:2.3:a:dovecot:dovecot:2.0.3:*:*:*:*:*:*:*
cpe:2.3:a:dovecot:dovecot:2.0.4:*:*:*:*:*:*:*
cpe:2.3:a:dovecot:dovecot:2.0.5:*:*:*:*:*:*:*
cpe:2.3:a:dovecot:dovecot:2.0.6:*:*:*:*:*:*:*
cpe:2.3:a:dovecot:dovecot:2.0.7:*:*:*:*:*:*:*
cpe:2.3:a:dovecot:dovecot:2.0.8:*:*:*:*:*:*:*
cpe:2.3:a:dovecot:dovecot:2.0.9:*:*:*:*:*:*:*
cpe:2.3:a:dovecot:dovecot:2.0.10:*:*:*:*:*:*:*
cpe:2.3:a:dovecot:dovecot:2.0.11:*:*:*:*:*:*:*
cpe:2.3:a:dovecot:dovecot:2.0.12:*:*:*:*:*:*:*
cpe:2.3:a:dovecot:dovecot:2.0.13:*:*:*:*:*:*:*
cpe:2.3:a:dovecot:dovecot:2.0.14:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools