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

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CVE-2011-1764

Severity CVSS v4.0:
Pending analysis
Type:
CWE-134 Format String Vulnerability
Publication date:
05/10/2011
Last modified:
11/04/2025

Description

Format string vulnerability in the dkim_exim_verify_finish function in src/dkim.c in Exim before 4.76 might allow remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via format string specifiers in data used in DKIM logging, as demonstrated by an identity field containing a % (percent) character.

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:exim:exim:*:*:*:*:*:*:*:* 4.75 (including)
cpe:2.3:a:exim:exim:2.10:*:*:*:*:*:*:*
cpe:2.3:a:exim:exim:2.11:*:*:*:*:*:*:*
cpe:2.3:a:exim:exim:2.12:*:*:*:*:*:*:*
cpe:2.3:a:exim:exim:3.00:*:*:*:*:*:*:*
cpe:2.3:a:exim:exim:3.01:*:*:*:*:*:*:*
cpe:2.3:a:exim:exim:3.02:*:*:*:*:*:*:*
cpe:2.3:a:exim:exim:3.03:*:*:*:*:*:*:*
cpe:2.3:a:exim:exim:3.10:*:*:*:*:*:*:*
cpe:2.3:a:exim:exim:3.11:*:*:*:*:*:*:*
cpe:2.3:a:exim:exim:3.12:*:*:*:*:*:*:*
cpe:2.3:a:exim:exim:3.13:*:*:*:*:*:*:*
cpe:2.3:a:exim:exim:3.14:*:*:*:*:*:*:*
cpe:2.3:a:exim:exim:3.15:*:*:*:*:*:*:*
cpe:2.3:a:exim:exim:3.16:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools