CVE-2013-2099
First published: Wed May 15 2013(Updated: )
A denial of service flaw was found in the way SSL module implementation of Python3, version 3 of the Python programming language (aka Python 3000), 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. Upstream bug report: [1] <a href="http://bugs.python.org/issue17980">http://bugs.python.org/issue17980</a> CVE request: [2] <a href="http://www.openwall.com/lists/oss-security/2013/05/15/6">http://www.openwall.com/lists/oss-security/2013/05/15/6</a> (is for python-backports-ssl_match_hostname, but that code comes from Python 3.2 ssl module implementation) [3] <a href="http://www.openwall.com/lists/oss-security/2013/05/15/7">http://www.openwall.com/lists/oss-security/2013/05/15/7</a> Acknowledgements: Name: Florian Weimer (Red Hat Product Security)
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Python Python | =3.2.0 | |
| Python Python | =3.2.1 | |
| Python Python | =3.2.2 | |
| Python Python | =3.2.3 | |
| Python Python | =3.2.4 | |
| Python Python | =3.2.5 | |
| Python Python | =3.3.0 | |
| Python Python | =3.3.1 | |
| Python Python | =3.3.2 | |
| Canonical Ubuntu Linux | =12.04 | |
| Canonical Ubuntu Linux | =12.10 | |
| Canonical Ubuntu Linux | =13.04 | |
| IBM Cognos Analytics | <=12.0.0-12.0.3 | |
| IBM Cognos Analytics | <=11.2.0-11.2.4 FP4 |
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Reference Links
- http://bugs.python.org/issue17980
- http://rhn.redhat.com/errata/RHSA-2014-1690.html
- http://secunia.com/advisories/55107
- http://secunia.com/advisories/55116
- http://www.openwall.com/lists/oss-security/2013/05/16/6
- http://www.ubuntu.com/usn/USN-1983-1
- http://www.ubuntu.com/usn/USN-1984-1
- http://www.ubuntu.com/usn/USN-1985-1
- https://access.redhat.com/errata/RHSA-2016:1166
- https://bugzilla.redhat.com/show_bug.cgi?id=963260
- http://www.openwall.com/lists/oss-security/2013/05/15/6
- http://www.openwall.com/lists/oss-security/2013/05/15/7
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=963261
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=963260#c5
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=963186
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=963187
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=963188
- https://access.redhat.com/security/cve/CVE-2013-2098
- http://www.openwall.com/lists/oss-security/2013/05/16/5
- https://access.redhat.com/security/cve/CVE-2013-2099
- https://bitbucket.org/brandon/backports.ssl_match_hostname/issue/1/cve-2013-2098-denial-of-service-when
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2
- http://hg.python.org/cpython/rev/fafd33db6ff6
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=966272
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=966270
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=966275
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=966271
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=966269
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=966274
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=966273
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=970110
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=970112
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=963260#c14
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-2098
- https://rhn.redhat.com/errata/RHSA-2014-1263.html
- https://rhn.redhat.com/errata/RHSA-2014-1690.html
- https://rhn.redhat.com/errata/RHSA-2015-0042.html
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1230952
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1231231
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1231232
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1111139
- https://www.ibm.com/support/pages/node/7177223 (Advisory)
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