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

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CVE-2011-0017

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
02/02/2011
Last modified:
11/04/2025

Description

The open_log function in log.c in Exim 4.72 and earlier does not check the return value from (1) setuid or (2) setgid system calls, which allows local users to append log data to arbitrary files via a symlink attack.

Impact

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

Base Score: 6.90 MEDIUM
Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C

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

Base Score 2.0
6.90
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:* 4.72 (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