CVE Vulnerabilities

CVE-2018-6508

Use of Externally-Controlled Format String

Published: Feb 09, 2018 | Modified: Jan 24, 2022
CVSS 3.x
8
HIGH
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
CVSS 2.x
6 MEDIUM
AV:N/AC:M/Au:S/C:P/I:P/A:P
RedHat/V2
RedHat/V3
9 IMPORTANT
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Ubuntu
MEDIUM

Puppet Enterprise 2017.3.x prior to 2017.3.3 are vulnerable to a remote execution bug when a specially crafted string was passed into the facter_task or puppet_conf tasks. This vulnerability only affects tasks in the affected modules, if you are not using puppet tasks you are not affected by this vulnerability.

Weakness

The product 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
Puppet_enterprise Puppet 2017.3.0 (including) 2017.3.2 (including)
Puppet-module-puppetlabs-apache Ubuntu artful *
Puppet-module-puppetlabs-apache Ubuntu bionic *
Puppet-module-puppetlabs-apache Ubuntu cosmic *
Puppet-module-puppetlabs-apache Ubuntu disco *
Puppet-module-puppetlabs-apache Ubuntu eoan *
Puppet-module-puppetlabs-apache Ubuntu groovy *
Puppet-module-puppetlabs-apache Ubuntu hirsute *
Puppet-module-puppetlabs-apache Ubuntu impish *
Puppet-module-puppetlabs-apache Ubuntu kinetic *
Puppet-module-puppetlabs-apache Ubuntu lunar *
Puppet-module-puppetlabs-apache Ubuntu mantic *
Puppet-module-puppetlabs-apache Ubuntu trusty *
Puppet-module-puppetlabs-apache Ubuntu xenial *
Puppet-module-puppetlabs-apt Ubuntu artful *
Puppet-module-puppetlabs-apt Ubuntu bionic *
Puppet-module-puppetlabs-apt Ubuntu cosmic *
Puppet-module-puppetlabs-apt Ubuntu disco *
Puppet-module-puppetlabs-apt Ubuntu eoan *
Puppet-module-puppetlabs-apt Ubuntu groovy *
Puppet-module-puppetlabs-apt Ubuntu hirsute *
Puppet-module-puppetlabs-apt Ubuntu impish *
Puppet-module-puppetlabs-apt Ubuntu kinetic *
Puppet-module-puppetlabs-apt Ubuntu lunar *
Puppet-module-puppetlabs-apt Ubuntu mantic *
Puppet-module-puppetlabs-apt Ubuntu trusty *
Puppet-module-puppetlabs-apt Ubuntu xenial *
Puppet-module-puppetlabs-mysql Ubuntu artful *
Puppet-module-puppetlabs-mysql Ubuntu bionic *
Puppet-module-puppetlabs-mysql Ubuntu cosmic *
Puppet-module-puppetlabs-mysql Ubuntu disco *
Puppet-module-puppetlabs-mysql Ubuntu eoan *
Puppet-module-puppetlabs-mysql Ubuntu groovy *
Puppet-module-puppetlabs-mysql Ubuntu hirsute *
Puppet-module-puppetlabs-mysql Ubuntu impish *
Puppet-module-puppetlabs-mysql Ubuntu kinetic *
Puppet-module-puppetlabs-mysql Ubuntu lunar *
Puppet-module-puppetlabs-mysql Ubuntu mantic *
Puppet-module-puppetlabs-mysql Ubuntu trusty *
Puppet-module-puppetlabs-mysql Ubuntu xenial *

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