{"id":"UBUNTU-CVE-2019-5010","details":"An exploitable denial-of-service vulnerability exists in the X509 certificate parser of Python.org Python 2.7.11 / 3.6.6. A specially crafted X509 certificate can cause a NULL pointer dereference, resulting in a denial of service. An attacker can initiate or accept TLS connections using crafted certificates to trigger this vulnerability.","modified":"2026-04-22T11:57:17.944191Z","published":"2019-01-18T00:00:00Z","related":["USN-4127-1","USN-4127-2","USN-6891-1"],"upstream":["CVE-2019-5010"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-5010"},{"type":"REPORT","url":"https://github.com/python/cpython/pull/11569"},{"type":"REPORT","url":"https://python-security.readthedocs.io/vuln/ssl-crl-dps-dos.html"},{"type":"REPORT","url":"https://blog.talosintelligence.com/2019/01/vulnerability-spotlight-pythonorg.html"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4127-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4127-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-5010"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6891-1"}],"affected":[{"package":{"name":"python3.4","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/python3.4@3.4.3-1ubuntu1~14.04.7+esm2?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.3-1ubuntu1~14.04.7+esm2"}]}],"versions":["3.4~b1-0ubuntu3","3.4~b1-4ubuntu4","3.4~b1-4ubuntu6","3.4~b1-5ubuntu2","3.4~b2-1","3.4~b3-1ubuntu1","3.4~rc1-1build1","3.4~rc2-1","3.4~rc3-0ubuntu1","3.4.0-1","3.4.0-2ubuntu1","3.4.0-2ubuntu1.1","3.4.3-1ubuntu1~14.04.1","3.4.3-1ubuntu1~14.04.3","3.4.3-1ubuntu1~14.04.4","3.4.3-1ubuntu1~14.04.5","3.4.3-1ubuntu1~14.04.6","3.4.3-1ubuntu1~14.04.7"],"ecosystem_specific":{"availability":"Available 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