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

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CVE-2012-5671

Severity CVSS v4.0:
Pending analysis
Type:
CWE-119 Buffer Errors
Publication date:
31/10/2012
Last modified:
11/04/2025

Description

Heap-based buffer overflow in the dkim_exim_query_dns_txt function in dkim.c in Exim 4.70 through 4.80, when DKIM support is enabled and acl_smtp_connect and acl_smtp_rcpt are not set to "warn control = dkim_disable_verify," allows remote attackers to execute arbitrary code via an email from a malicious DNS server.

Impact

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

Base Score: 6.80 MEDIUM
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

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

Base Score 2.0
6.80
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:exim:exim:4.70:*:*:*:*:*:*:*
cpe:2.3:a:exim:exim:4.71:*:*:*:*:*:*:*
cpe:2.3:a:exim:exim:4.72:*:*:*:*:*:*:*
cpe:2.3:a:exim:exim:4.73:*:*:*:*:*:*:*
cpe:2.3:a:exim:exim:4.74:*:*:*:*:*:*:*
cpe:2.3:a:exim:exim:4.75:*:*:*:*:*:*:*
cpe:2.3:a:exim:exim:4.76:*:*:*:*:*:*:*
cpe:2.3:a:exim:exim:4.77:*:*:*:*:*:*:*
cpe:2.3:a:exim:exim:4.80:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools