CVE Vulnerabilities

CVE-2008-1658

Use of Externally-Controlled Format String

Published: Apr 11, 2008 | Modified: Aug 08, 2017
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
4.6 MEDIUM
AV:L/AC:L/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu

Format string vulnerability in the grant helper (polkit-grant-helper.c) in PolicyKit 0.7 and earlier allows attackers to cause a denial of service (crash) and possibly execute arbitrary code via format strings in a password.

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
Policykit Freedesktop 0.6 0.6
Policykit Freedesktop * 0.7
Policykit Ubuntu devel *
Policykit Ubuntu upstream *

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