CVE Vulnerabilities

CVE-2005-3656

Use of Externally-Controlled Format String

Published: Dec 31, 2005 | Modified: Oct 03, 2018
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
10 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu

Multiple format string vulnerabilities in logging functions in mod_auth_pgsql before 2.0.3, when used for user authentication against a PostgreSQL database, allows remote unauthenticated attackers to execute arbitrary code, as demonstrated via the username.

Weakness

The software uses a function that accepts a format string as an argument, but the format string originates from an external source.

Affected Software

Name Vendor Start Version End Version
Mod_auth_pgsql Guiseppe_tanzilli_and_matthias_eckermann 0.9.5 0.9.5
Mod_auth_pgsql Guiseppe_tanzilli_and_matthias_eckermann 0.9.6 0.9.6
Mod_auth_pgsql Guiseppe_tanzilli_and_matthias_eckermann * 2.0.3
Red Hat Enterprise Linux 3 RedHat mod_auth_pgsql-0:2.0.1-4.ent.1 *
Red Hat Enterprise Linux 4 RedHat mod_auth_pgsql-0:2.0.1-7.1 *
Libapache2-mod-auth-pgsql Ubuntu dapper *
Libapache2-mod-auth-pgsql Ubuntu devel *
Libapache2-mod-auth-pgsql Ubuntu edgy *
Libapache2-mod-auth-pgsql Ubuntu feisty *

Extended Description

When an attacker can modify an externally-controlled format string, this can lead to buffer overflows, denial of service, or data representation problems. It should be noted that in some circumstances, such as internationalization, the set of format strings is externally controlled by design. If the source of these format strings is trusted (e.g. only contained in library files that are only modifiable by the system administrator), then the external control might not itself pose a vulnerability.

Potential Mitigations

References