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

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CVE-2009-4565

Severity CVSS v4.0:
Pending analysis
Type:
CWE-310 Cryptographic Issues
Publication date:
04/01/2010
Last modified:
09/04/2025

Description

sendmail before 8.14.4 does not properly handle a '\0' character in a Common Name (CN) field of an X.509 certificate, which (1) allows man-in-the-middle attackers to spoof arbitrary SSL-based SMTP servers via a crafted server certificate issued by a legitimate Certification Authority, and (2) allows remote attackers to bypass intended access restrictions via a crafted client 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:P CVSS v2.0 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

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

Base Score 2.0
7.50
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:sendmail:sendmail:*:*:*:*:*:*:*:* 8.14.3 (including)
cpe:2.3:a:sendmail:sendmail:2.6:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:2.6.1:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:3.0:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:3.0.1:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:4.1:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:4.55:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:5:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:5.59:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:5.61:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:5.65:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.6.7:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.7.6:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.7.7:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.7.8:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools