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

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CVE-2009-2666

Severity CVSS v4.0:
Pending analysis
Type:
CWE-310 Cryptographic Issues
Publication date:
07/08/2009
Last modified:
09/04/2025

Description

socket.c in fetchmail before 6.3.11 does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

Impact

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

Base Score: 6.40 MEDIUM
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:N

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

Base Score 2.0
6.40
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:fetchmail:fetchmail:*:*:*:*:*:*:*:* 6.3.10 (including)
cpe:2.3:a:fetchmail:fetchmail:4.5.1:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.5.2:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.5.3:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.5.4:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.5.5:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.5.6:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.5.7:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.5.8:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.6.0:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.6.1:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.6.2:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.6.3:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.6.4:*:*:*:*:*:*:*
cpe:2.3:a:fetchmail:fetchmail:4.6.5:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools