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Red Hat Security Advisory 2015-0749-01

Red Hat Security Advisory 2015-0749-01
Posted Mar 30, 2015
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2015-0749-01 - The libxml2 library is a development toolbox providing the implementation of various XML standards. It was discovered that libxml2 loaded external parameter entities even when entity substitution was disabled. A remote attacker able to provide a specially crafted XML file to an application linked against libxml2 could use this flaw to conduct XML External Entity attacks, possibly resulting in a denial of service or an information leak on the system. The CVE-2014-0191 issue was discovered by Daniel P. Berrange of Red Hat.

tags | advisory, remote, denial of service, xxe
systems | linux, redhat
advisories | CVE-2014-0191
SHA-256 | 15c49fedfd4a3e46ea1a642a1d02d9c329ca365e3e9985dba2151d5b6dfb8796

Red Hat Security Advisory 2015-0749-01

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=====================================================================
Red Hat Security Advisory

Synopsis: Moderate: libxml2 security update
Advisory ID: RHSA-2015:0749-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-0749.html
Issue date: 2015-03-30
CVE Names: CVE-2014-0191
=====================================================================

1. Summary:

Updated libxml2 packages that fix one security issue are now available for
Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having Moderate 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 Client (v. 7) - x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64
Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

3. Description:

The libxml2 library is a development toolbox providing the implementation
of various XML standards.

It was discovered that libxml2 loaded external parameter entities even when
entity substitution was disabled. A remote attacker able to provide a
specially crafted XML file to an application linked against libxml2 could
use this flaw to conduct XML External Entity (XXE) attacks, possibly
resulting in a denial of service or an information leak on the system.
(CVE-2014-0191)

The CVE-2014-0191 issue was discovered by Daniel P. Berrange of Red Hat.

All libxml2 users are advised to upgrade to these updated packages, which
contain a backported patch to correct this issue. The desktop must be
restarted (log out, then log back in) for this update to take effect.

4. Solution:

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

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

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

1090976 - CVE-2014-0191 libxml2: external parameter entity loaded when entity substitution is disabled

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
libxml2-2.9.1-5.el7_1.2.src.rpm

x86_64:
libxml2-2.9.1-5.el7_1.2.i686.rpm
libxml2-2.9.1-5.el7_1.2.x86_64.rpm
libxml2-debuginfo-2.9.1-5.el7_1.2.i686.rpm
libxml2-debuginfo-2.9.1-5.el7_1.2.x86_64.rpm
libxml2-python-2.9.1-5.el7_1.2.x86_64.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

x86_64:
libxml2-debuginfo-2.9.1-5.el7_1.2.i686.rpm
libxml2-debuginfo-2.9.1-5.el7_1.2.x86_64.rpm
libxml2-devel-2.9.1-5.el7_1.2.i686.rpm
libxml2-devel-2.9.1-5.el7_1.2.x86_64.rpm
libxml2-static-2.9.1-5.el7_1.2.i686.rpm
libxml2-static-2.9.1-5.el7_1.2.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
libxml2-2.9.1-5.el7_1.2.src.rpm

x86_64:
libxml2-2.9.1-5.el7_1.2.i686.rpm
libxml2-2.9.1-5.el7_1.2.x86_64.rpm
libxml2-debuginfo-2.9.1-5.el7_1.2.i686.rpm
libxml2-debuginfo-2.9.1-5.el7_1.2.x86_64.rpm
libxml2-python-2.9.1-5.el7_1.2.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

x86_64:
libxml2-debuginfo-2.9.1-5.el7_1.2.i686.rpm
libxml2-debuginfo-2.9.1-5.el7_1.2.x86_64.rpm
libxml2-devel-2.9.1-5.el7_1.2.i686.rpm
libxml2-devel-2.9.1-5.el7_1.2.x86_64.rpm
libxml2-static-2.9.1-5.el7_1.2.i686.rpm
libxml2-static-2.9.1-5.el7_1.2.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
libxml2-2.9.1-5.el7_1.2.src.rpm

ppc64:
libxml2-2.9.1-5.el7_1.2.ppc.rpm
libxml2-2.9.1-5.el7_1.2.ppc64.rpm
libxml2-debuginfo-2.9.1-5.el7_1.2.ppc.rpm
libxml2-debuginfo-2.9.1-5.el7_1.2.ppc64.rpm
libxml2-devel-2.9.1-5.el7_1.2.ppc.rpm
libxml2-devel-2.9.1-5.el7_1.2.ppc64.rpm
libxml2-python-2.9.1-5.el7_1.2.ppc64.rpm

s390x:
libxml2-2.9.1-5.el7_1.2.s390.rpm
libxml2-2.9.1-5.el7_1.2.s390x.rpm
libxml2-debuginfo-2.9.1-5.el7_1.2.s390.rpm
libxml2-debuginfo-2.9.1-5.el7_1.2.s390x.rpm
libxml2-devel-2.9.1-5.el7_1.2.s390.rpm
libxml2-devel-2.9.1-5.el7_1.2.s390x.rpm
libxml2-python-2.9.1-5.el7_1.2.s390x.rpm

x86_64:
libxml2-2.9.1-5.el7_1.2.i686.rpm
libxml2-2.9.1-5.el7_1.2.x86_64.rpm
libxml2-debuginfo-2.9.1-5.el7_1.2.i686.rpm
libxml2-debuginfo-2.9.1-5.el7_1.2.x86_64.rpm
libxml2-devel-2.9.1-5.el7_1.2.i686.rpm
libxml2-devel-2.9.1-5.el7_1.2.x86_64.rpm
libxml2-python-2.9.1-5.el7_1.2.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
libxml2-2.9.1-5.ael7b_1.2.src.rpm

ppc64le:
libxml2-2.9.1-5.ael7b_1.2.ppc64le.rpm
libxml2-debuginfo-2.9.1-5.ael7b_1.2.ppc64le.rpm
libxml2-devel-2.9.1-5.ael7b_1.2.ppc64le.rpm
libxml2-python-2.9.1-5.ael7b_1.2.ppc64le.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

ppc64:
libxml2-debuginfo-2.9.1-5.el7_1.2.ppc.rpm
libxml2-debuginfo-2.9.1-5.el7_1.2.ppc64.rpm
libxml2-static-2.9.1-5.el7_1.2.ppc.rpm
libxml2-static-2.9.1-5.el7_1.2.ppc64.rpm

s390x:
libxml2-debuginfo-2.9.1-5.el7_1.2.s390.rpm
libxml2-debuginfo-2.9.1-5.el7_1.2.s390x.rpm
libxml2-static-2.9.1-5.el7_1.2.s390.rpm
libxml2-static-2.9.1-5.el7_1.2.s390x.rpm

x86_64:
libxml2-debuginfo-2.9.1-5.el7_1.2.i686.rpm
libxml2-debuginfo-2.9.1-5.el7_1.2.x86_64.rpm
libxml2-static-2.9.1-5.el7_1.2.i686.rpm
libxml2-static-2.9.1-5.el7_1.2.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

ppc64le:
libxml2-debuginfo-2.9.1-5.ael7b_1.2.ppc64le.rpm
libxml2-static-2.9.1-5.ael7b_1.2.ppc64le.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
libxml2-2.9.1-5.el7_1.2.src.rpm

x86_64:
libxml2-2.9.1-5.el7_1.2.i686.rpm
libxml2-2.9.1-5.el7_1.2.x86_64.rpm
libxml2-debuginfo-2.9.1-5.el7_1.2.i686.rpm
libxml2-debuginfo-2.9.1-5.el7_1.2.x86_64.rpm
libxml2-devel-2.9.1-5.el7_1.2.i686.rpm
libxml2-devel-2.9.1-5.el7_1.2.x86_64.rpm
libxml2-python-2.9.1-5.el7_1.2.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

x86_64:
libxml2-debuginfo-2.9.1-5.el7_1.2.i686.rpm
libxml2-debuginfo-2.9.1-5.el7_1.2.x86_64.rpm
libxml2-static-2.9.1-5.el7_1.2.i686.rpm
libxml2-static-2.9.1-5.el7_1.2.x86_64.rpm

These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2014-0191
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2015 Red Hat, Inc.
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