Red Hat Security Advisory 2016-1166-01 - Python is an interpreted, interactive, object-oriented programming language that supports modules, classes, exceptions, high-level dynamic data types, and dynamic typing. The python27 packages provide a stable release of Python 2.7 with a number of additional utilities and database connectors for MySQL and PostgreSQL. Security Fix: The following fix was applied to the python component: The Python standard library HTTP client modules did not perform verification of TLS/SSL certificates when connecting to HTTPS servers. A man-in-the-middle attacker could use this flaw to hijack connections and eavesdrop or modify transferred data.
116aa091e5b51bb4e976b645fbaaff53c6753ebb9b4ca77c61747631d4c5f4c6Red Hat Security Advisory 2015-0042-01 - 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. This issue was discovered by Florian Weimer of Red Hat Product Security.
6706af2caac638d9939aa28f31ae15f6d34e9050051252c075201903cea2c614Red Hat Security Advisory 2014-1690-01 - 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. This issue was discovered by Florian Weimer of Red Hat Product Security.
630f007e3d3cbb97e3d958feade33386613235e76e9498f96c508f28f5197ea2Red Hat Security Advisory 2014-1263-01 - Red Hat Storage is software-only, scale-out storage that provides flexible and affordable unstructured data storage for an enterprise. GlusterFS, a key building block of Red Hat Storage, is based on a stackable user-space design and can deliver exceptional performance for diverse workloads. GlusterFS aggregates various storage servers over network interconnections into one large, parallel network file system. 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.
07935517a1160d0ddf3e661cb88a20de2f6f667843baa9ea71638f4e8bdc0550Gentoo Linux Security Advisory 201401-4 - Multiple vulnerabilities have been found in Python, worst of which allows remote attackers to cause a Denial of Service condition. Versions less than 3.3.2-r1 are affected.
ea1459ef6b2a4cd82ae9954fd97f9d0188e19037466f94dc888a2a8b46709ebcUbuntu Security Notice 1985-1 - Florian Weimer discovered that Python incorrectly handled matching multiple wildcards in ssl certificate hostnames. An attacker could exploit this to cause Python to consume resources, resulting in a denial of service. Ryan Sleevi discovered that Python did not properly handle certificates with NULL characters in the Subject Alternative Name field. An attacker could exploit this to perform a man in the middle attack to view sensitive information or alter encrypted communications. Various other issues were also addressed.
0f366392969f20155d45311d551bc121f8cca2af29a02d07e5e1e546d84e407fUbuntu Security Notice 1983-1 - Florian Weimer discovered that Python incorrectly handled matching multiple wildcards in ssl certificate hostnames. An attacker could exploit this to cause Python to consume resources, resulting in a denial of service. This issue only affected Ubuntu 13.04. Ryan Sleevi discovered that Python did not properly handle certificates with NULL characters in the Subject Alternative Name field. An attacker could exploit this to perform a man in the middle attack to view sensitive information or alter encrypted communications. Various other issues were also addressed.
9ab7514520e21d4cb81b76c6be2121d9d8ecc991fae05d293e5e8061b9f84a2aUbuntu Security Notice 1984-1 - Florian Weimer discovered that Python incorrectly handled matching multiple wildcards in ssl certificate hostnames. An attacker could exploit this to cause Python to consume resources, resulting in a denial of service. Ryan Sleevi discovered that Python did not properly handle certificates with NULL characters in the Subject Alternative Name field. An attacker could exploit this to perform a man in the middle attack to view sensitive information or alter encrypted communications. Various other issues were also addressed.
c673c920639adac95e57596bc8aab64ff8ca0183257ddb8017aaad829ee17e9aMandriva Linux Security Advisory 2013-229 - A denial of service flaw was found in the way SSL module implementation of Python 3 performed matching of the certificate's name in the case it contained many '*' wildcard characters. A remote attacker, able to obtain valid certificate with its name containing a lot of '*' wildcard characters could use this flaw to cause denial of service (excessive CPU consumption) by issuing request to validate such a certificate for / to an application using the Python's ssl.match_hostname() functionality.
e55f4fdbd1dac58bc000e9004a9873f1d5b813753890f488ddd4a4260314a28c
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