RedHat: RHSA-2014-1690:01 Low: python-backports-ssl_match_hostname security
Summary
The python-backports-ssl_match_hostname package provides RFC 6125 compliant
wildcard matching.
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.
All python-backports-ssl_match_hostname users are advised to upgrade to
this updated package, which contains a backported patch to correct this
issue.
Summary
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/articles/11258
References
https://access.redhat.com/security/cve/CVE-2013-2099 https://access.redhat.com/security/updates/classification/#low
Package List
Red Hat Enterprise Linux OpenStack Platform 4.0:
Source:
python-backports-ssl_match_hostname-3.4.0.2-1.el6.src.rpm
noarch:
python-backports-ssl_match_hostname-3.4.0.2-1.el6.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/
Topic
An updated python-backports-ssl_match_hostname package that fixes onesecurity issue is now available for Red Hat Enterprise Linux OpenStackPlatform 4.0.Red Hat Product Security has rated this update as having Low securityimpact. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available from the CVE link in theReferences section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux OpenStack Platform 4.0 - noarch
Bugs Fixed
963260 - CVE-2013-2099 python: ssl.match_hostname() DoS via certificates with specially crafted hostname wildcard patterns