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Red Hat OpenStack 8.0 RHSA-2017-0936 Moderate: python-defusedxml DoS Patch

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Calendar Grey April 12, 2017
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Red Hat issues an advisory concerning a significant security caution for python-defusedxml and python-pysaml2 within OpenStack. Updates are now accessible.
An update for python-defusedxml and python-pysaml2 is now available for Red Hat OpenStack Platform 8.0 (Liberty)

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

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

Summary

The defusedxml package contains several Python-only updates for security vulnerabilities in Python's XML libraries. Defusedxml functions and classes can be used instead of the originals to protect against entity-expansion and DTD-retrieval issues.
PySAML2 is the python implementation of SAML Version 2, containing all the functionality for building a SAML2 service provider or an identity provider, to be used in a WSGI environment.
Security Fix(es):
* An XML entity expansion vulnerability was found in python-pysaml2. A remote attacker could send a crafted request which would cause denial of service through resource exhaustion. (CVE-2016-10149)

Topics%20covered

Topics Covered

security advisory moderate python dos openstack xml

References

https://access.redhat.com/security/cve/CVE-2016-10149 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat OpenStack Platform 8.0 (Liberty):
Source: python-defusedxml-0.5.0-1.el7ost.src.rpm python-pysaml2-3.0.2-3.el7ost.src.rpm
noarch: python-defusedxml-0.5.0-1.el7ost.noarch.rpm python-pysaml2-3.0.2-3.el7ost.noarch.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


Advisory ID: RHSA-2017:0936-01
Product: Red Hat Enterprise Linux OpenStack Platform
Advisory URL: https://access.redhat.com/errata/RHSA-2017:0936
Issue date: 2017-04-12

Topic

An update for python-defusedxml and python-pysaml2 is now available for RedHat OpenStack Platform 8.0 (Liberty).Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory moderate python dos openstack xml

Relevant Releases Architectures

Red Hat OpenStack Platform 8.0 (Liberty) - noarch

Bugs Fixed

1415710 - CVE-2016-10149 python-pysaml2: Entity expansion issue

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