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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2015.0092 Low: cloud-init security, bug fix, and enhancement update 14 January 2015 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: cloud-init Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 6 Red Hat Enterprise Linux WS/Desktop 6 Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2013-2099 Reference: ESB-2014.1930 ESB-2014.1621 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2015-0042.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Low: cloud-init security, bug fix, and enhancement update Advisory ID: RHSA-2015:0042-01 Product: Red Hat Common Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-0042.html Issue date: 2015-01-13 CVE Names: CVE-2013-2099 ===================================================================== 1. Summary: 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. 2. Relevant releases/architectures: Red Hat Common for RHEL Client (v. 6) - i386, noarch, x86_64 Red Hat Common for RHEL Compute Node (v. 6) - noarch, x86_64 Red Hat Common for RHEL Server (v. 6) - i386, noarch, ppc64, s390x, x86_64 Red Hat Common for RHEL Workstation (v. 6) - i386, noarch, x86_64 3. Description: 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. 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/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 963260 - CVE-2013-2099 python: ssl.match_hostname() DoS via certificates with specially crafted hostname wildcard patterns 6. Package List: Red Hat Common for RHEL Client (v. 6): Source: python-backports-1.0-3.el6.src.rpm python-backports-ssl_match_hostname-3.4.0.2-1.el6.src.rpm python-six-1.6.1-1.el6.src.rpm python-urllib3-1.5-5.1.2.el6.src.rpm i386: python-backports-1.0-3.el6.i686.rpm noarch: python-backports-ssl_match_hostname-3.4.0.2-1.el6.noarch.rpm python-six-1.6.1-1.el6.noarch.rpm python-urllib3-1.5-5.1.2.el6.noarch.rpm x86_64: python-backports-1.0-3.el6.x86_64.rpm Red Hat Common for RHEL Compute Node (v. 6): Source: python-backports-1.0-3.el6.src.rpm python-backports-ssl_match_hostname-3.4.0.2-1.el6.src.rpm python-six-1.6.1-1.el6.src.rpm python-urllib3-1.5-5.1.2.el6.src.rpm noarch: python-backports-ssl_match_hostname-3.4.0.2-1.el6.noarch.rpm python-six-1.6.1-1.el6.noarch.rpm python-urllib3-1.5-5.1.2.el6.noarch.rpm x86_64: python-backports-1.0-3.el6.x86_64.rpm Red Hat Common for RHEL Server (v. 6): Source: cloud-init-0.7.5-1.el6.src.rpm python-backports-1.0-3.el6.src.rpm python-backports-ssl_match_hostname-3.4.0.2-1.el6.src.rpm python-boto-2.25.0-2.el6.src.rpm python-jsonpatch-1.2-2.el6.src.rpm python-jsonpointer-1.0-2.el6.src.rpm python-six-1.6.1-1.el6.src.rpm python-urllib3-1.5-5.1.2.el6.src.rpm i386: cloud-init-0.7.5-1.el6.i686.rpm python-backports-1.0-3.el6.i686.rpm noarch: python-backports-ssl_match_hostname-3.4.0.2-1.el6.noarch.rpm python-boto-2.25.0-2.el6.noarch.rpm python-jsonpatch-1.2-2.el6.noarch.rpm python-jsonpointer-1.0-2.el6.noarch.rpm python-six-1.6.1-1.el6.noarch.rpm python-urllib3-1.5-5.1.2.el6.noarch.rpm ppc64: python-backports-1.0-3.el6.ppc64.rpm s390x: python-backports-1.0-3.el6.s390x.rpm x86_64: cloud-init-0.7.5-1.el6.x86_64.rpm python-backports-1.0-3.el6.x86_64.rpm Red Hat Common for RHEL Workstation (v. 6): Source: python-backports-1.0-3.el6.src.rpm python-backports-ssl_match_hostname-3.4.0.2-1.el6.src.rpm python-six-1.6.1-1.el6.src.rpm python-urllib3-1.5-5.1.2.el6.src.rpm i386: python-backports-1.0-3.el6.i686.rpm noarch: python-backports-ssl_match_hostname-3.4.0.2-1.el6.noarch.rpm python-six-1.6.1-1.el6.noarch.rpm python-urllib3-1.5-5.1.2.el6.noarch.rpm x86_64: python-backports-1.0-3.el6.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-2013-2099 https://access.redhat.com/security/updates/classification/#low 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. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFUtaH/XlSAg2UNWIIRAgWWAJoD2Pbv7YzZ6ajx2ujKSJ/VfNeaHACggX2P TJU+JcnWNup0QesbQsz0OUA= =r2Mg - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBVLXsRRLndAQH1ShLAQJF0A//TepN8O4CQXLE/sbdJXJgbF2/hptHeYmH eRYJMjsysx4nJU+7ONcHNQCkU/9sEvxxxIc7TfYZ2b4moojLxkxskUjScwUWQNqj QndIf2WIdefqRVQ8J/MQUT8MrmIo/rkEyeKGGg5ZJqC/ke15QPptFhzVJfenYB1c SA+CYfxJJI6YfIbOnoQMtUnO9pxezHBXzX54YQXNC5v7jgrWeot7yyzKR1RsDiiI ydyK9OHbqXsgq70Wq0opKppUDt9VEgb7ql/3mrYGm53biUDSv5000QEEDzWdftIv thMVEo/KHsWQUzWwzPlua1AggXxgRSyyWXt2l4XxyAlmPRs2V3hetKrKpLph91+r 600rl7+eFBtDlMUiUMH7Zi37Dz3l8GWrewhlJTfzxWD9BP7KsLPnNf8ViZh4R66b Usi/oYJy95jBkZxLfQ5+YhJ3Pi2rKU9q39lE9FqEBgglxtR5hKbjQ2bRoqQcnWY1 vbEthYTI+Wq4mj9lEKMcZwObhMupviLttmrXw+vDtd50z2YGYrJT+PXKe0cSP/Xt 9jBUdpqRLNB50Iru4rKF0gHLyuZJe3H8KKXIpUxr/+IQb2Hal2t0PuSDRT8XfAeu SVnB5UGwZyYK7soO71ygavGCWfdordmIGjUiE4DhLw/bY/46gyY/C5Z1CwY7prRr cykLRCn+CBw= =PV2A -----END PGP SIGNATURE-----