Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Summary
Title augeas security, bug fix, and enhancement update
Informations
Name RHSA-2013:1537 First vendor Publication 2013-11-21
Vendor RedHat Last vendor Modification 2013-11-21
Severity (Vendor) Low Revision 02

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:H/Au:N/C:P/I:P/A:P)
Cvss Base Score 3.7 Attack Range Local
Cvss Impact Score 6.4 Attack Complexity High
Cvss Expoit Score 1.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Problem Description:

Updated augeas packages that fix two security issues, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team 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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

3. Description:

Augeas is a utility for editing configuration. Augeas parses configuration files in their native formats and transforms them into a tree. Configuration changes are made by manipulating this tree and saving it back into native configuration files. Augeas also uses "lenses" as basic building blocks for establishing the mapping from files into the Augeas tree and back.

Multiple flaws were found in the way Augeas handled configuration files when updating them. An application using Augeas to update configuration files in a directory that is writable to by a different user (for example, an application running as root that is updating files in a directory owned by a non-root service user) could have been tricked into overwriting arbitrary files or leaking information via a symbolic link or mount point attack. (CVE-2012-0786, CVE-2012-0787)

The augeas package has been upgraded to upstream version 1.0.0, which provides a number of bug fixes and enhancements over the previous version. (BZ#817753)

This update also fixes the following bugs:

* Previously, when single quotes were used in an XML attribute, Augeas was unable to parse the file with the XML lens. An upstream patch has been provided ensuring that single quotes are handled as valid characters and parsing no longer fails. (BZ#799885)

* Prior to this update, Augeas was unable to set up the "require_ssl_reuse" option in the vsftpd.conf file. The updated patch fixes the vsftpd lens to properly recognize this option, thus fixing this bug. (BZ#855022)

* Previously, the XML lens did not support non-Unix line endings. Consequently, Augeas was unable to load any files containing such line endings. The XML lens has been fixed to handle files with CRLF line endings, thus fixing this bug. (BZ#799879)

* Previously, Augeas was unable to parse modprobe.conf files with spaces around "=" characters in option directives. The modprobe lens has been updated and parsing no longer fails. (BZ#826752)

All Augeas users are advised to upgrade to these updated packages, which contain backported patches to correct these issues and add these enhancements.

4. Solution:

Before applying this update, make sure all previously released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/site/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

772257 - CVE-2012-0786 augeas: susceptible to symlink attack 772261 - CVE-2012-0787 augeas: susceptible to mountpoint attack 826752 - virsh iface-list produces an error when "options ipv6 disable = 1" is in an /etc/modprobe.d file 855022 - Augeas can't setup "require_ssl_reuse" option in vsftpd.conf

Original Source

Url : https://rhn.redhat.com/errata/RHSA-2013-1537.html

CWE : Common Weakness Enumeration

% Id Name
50 % CWE-59 Improper Link Resolution Before File Access ('Link Following')
50 % CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (CWE/SANS Top 25)

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:26916
 
Oval ID: oval:org.mitre.oval:def:26916
Title: RHSA-2013:1537 -- augeas security, bug fix, and enhancement update (Low)
Description: Augeas is a utility for editing configuration. Augeas parses configuration files in their native formats and transforms them into a tree. Configuration changes are made by manipulating this tree and saving it back into native configuration files. Augeas also uses "lenses" as basic building blocks for establishing the mapping from files into the Augeas tree and back. Multiple flaws were found in the way Augeas handled configuration files when updating them. An application using Augeas to update configuration files in a directory that is writable to by a different user (for example, an application running as root that is updating files in a directory owned by a non-root service user) could have been tricked into overwriting arbitrary files or leaking information via a symbolic link or mount point attack. (CVE-2012-0786, CVE-2012-0787) The augeas package has been upgraded to upstream version 1.0.0, which provides a number of bug fixes and enhancements over the previous version. (BZ#817753) This update also fixes the following bugs: * Previously, when single quotes were used in an XML attribute, Augeas was unable to parse the file with the XML lens. An upstream patch has been provided ensuring that single quotes are handled as valid characters and parsing no longer fails. (BZ#799885) * Prior to this update, Augeas was unable to set up the "require_ssl_reuse" option in the vsftpd.conf file. The updated patch fixes the vsftpd lens to properly recognize this option, thus fixing this bug. (BZ#855022) * Previously, the XML lens did not support non-Unix line endings. Consequently, Augeas was unable to load any files containing such line endings. The XML lens has been fixed to handle files with CRLF line endings, thus fixing this bug. (BZ#799879) * Previously, Augeas was unable to parse modprobe.conf files with spaces around "=" characters in option directives. The modprobe lens has been updated and parsing no longer fails. (BZ#826752) All Augeas users are advised to upgrade to these updated packages, which contain backported patches to correct these issues and add these enhancements.
Family: unix Class: patch
Reference(s): RHSA-2013:1537
CESA-2013:1537
CVE-2012-0786
CVE-2012-0787
Version: 3
Platform(s): Red Hat Enterprise Linux 6
CentOS Linux 6
Product(s): augeas
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:27387
 
Oval ID: oval:org.mitre.oval:def:27387
Title: ELSA-2013-1537 -- augeas security, bug fix, and enhancement update (low)
Description: [1.0.0-5] - Don't package lenses in tests/ subdirectory. related: rhbz#817753
Family: unix Class: patch
Reference(s): ELSA-2013-1537
CVE-2012-0786
CVE-2012-0787
Version: 3
Platform(s): Oracle Linux 6
Product(s): augeas
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 36
Os 1

Nessus® Vulnerability Scanner

Date Description
2015-03-26 Name : The remote Debian host is missing a security update.
File : debian_DLA-28.nasl - Type : ACT_GATHER_INFO
2014-11-12 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2013-1537.nasl - Type : ACT_GATHER_INFO
2014-11-08 Name : The remote Red Hat host is missing a security update.
File : redhat-RHSA-2013-1527.nasl - Type : ACT_GATHER_INFO
2014-08-14 Name : The remote SuSE 11 host is missing one or more security updates.
File : suse_11_augeas-140730.nasl - Type : ACT_GATHER_INFO
2014-01-27 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2014-022.nasl - Type : ACT_GATHER_INFO
2013-12-10 Name : The remote Amazon Linux AMI host is missing a security update.
File : ala_ALAS-2013-250.nasl - Type : ACT_GATHER_INFO
2013-12-04 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20131121_augeas_on_SL6_x.nasl - Type : ACT_GATHER_INFO
2013-11-27 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2013-1537.nasl - Type : ACT_GATHER_INFO
2013-11-21 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2013-1537.nasl - Type : ACT_GATHER_INFO

Alert History

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Date Informations
2014-11-13 13:27:19
  • Multiple Updates
2014-02-17 11:57:35
  • Multiple Updates
2014-01-29 21:26:54
  • Multiple Updates
2013-11-25 21:23:05
  • Multiple Updates
2013-11-23 22:14:33
  • Multiple Updates
2013-11-21 09:18:20
  • First insertion