RHEL 6 : cloud-init (RHSA-2015:0042)

medium Nessus Plugin ID 80506


The remote Red Hat host is missing one or more security updates.


Updated cloud-init packages that fix one security issue, several bugs, and add various enhancements are now available for Red Hat Common for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having Low security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

The cloud-init packages provide a set of init scripts for cloud instances. Cloud instances need special scripts to run during initialization to retrieve and install ssh keys and to let the user run various scripts.

A denial of service flaw was found in the way Python's SSL module implementation performed matching of certain certificate names. A remote attacker able to obtain a valid certificate that contained multiple wildcard characters could use this flaw to issue a request to validate such a certificate, resulting in excessive consumption of CPU. (CVE-2013-2099)

This issue was discovered by Florian Weimer of Red Hat Product Security.

The cloud-init packages have been upgraded to upstream version 0.7.5, which provides a number of bug fixes and enhancements over the previous version. (BZ#1111709, BZ#1119334)

All cloud-init users are advised to upgrade to these updated packages, which correct these issues and add these enhancements.


Update the affected packages.

See Also



Plugin Details

Severity: Medium

ID: 80506

File Name: redhat-RHSA-2015-0042.nasl

Version: 1.11

Type: local

Agent: unix

Published: 1/14/2015

Updated: 2/5/2021

Supported Sensors: Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.7

Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P

Temporal Vector: E:ND/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:cloud-init, p-cpe:/a:redhat:enterprise_linux:python-backports, p-cpe:/a:redhat:enterprise_linux:python-backports-ssl_match_hostname, p-cpe:/a:redhat:enterprise_linux:python-boto, p-cpe:/a:redhat:enterprise_linux:python-jsonpatch, p-cpe:/a:redhat:enterprise_linux:python-jsonpointer, p-cpe:/a:redhat:enterprise_linux:python-six, p-cpe:/a:redhat:enterprise_linux:python-urllib3, cpe:/o:redhat:enterprise_linux:6

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 1/13/2015

Vulnerability Publication Date: 10/9/2013

Reference Information

CVE: CVE-2013-2099

BID: 59877

RHSA: 2015:0042