{"id":"UBUNTU-CVE-2019-20907","details":"In Lib/tarfile.py in Python through 3.8.3, an attacker is able to craft a TAR archive leading to an infinite loop when opened by tarfile.open, because _proc_pax lacks header validation.","modified":"2026-04-22T12:17:48.182366Z","published":"2020-07-13T13:15:00Z","related":["USN-4428-1","USN-4754-3","USN-6891-1"],"upstream":["CVE-2019-20907"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-20907"},{"type":"REPORT","url":"https://bugs.python.org/issue39017"},{"type":"REPORT","url":"https://github.com/python/cpython/pull/21454"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4428-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4754-3"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-20907"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6891-1"}],"affected":[{"package":{"name":"python2.7","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/python2.7@2.7.6-8ubuntu0.6+esm6?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.6-8ubuntu0.6+esm6"}]}],"versions":["2.7.5-8ubuntu3","2.7.5-8ubuntu4","2.7.6-2","2.7.6-2ubuntu1","2.7.6-3","2.7.6-3ubuntu1","2.7.6-4","2.7.6-4ubuntu1","2.7.6-5","2.7.6-7","2.7.6-8","2.7.6-8ubuntu0.2","2.7.6-8ubuntu0.3","2.7.6-8ubuntu0.4","2.7.6-8ubuntu0.5","2.7.6-8ubuntu0.6+esm2","2.7.6-8ubuntu0.6+esm3","2.7.6-8ubuntu0.6+esm5"],"ecosystem_specific":{"binaries":[{"binary_name":"idle-python2.7","binary_version":"2.7.6-8ubuntu0.6+esm6"},{"binary_name":"libpython2.7","binary_version":"2.7.6-8ubuntu0.6+esm6"},{"binary_name":"libpython2.7-minimal","binary_version":"2.7.6-8ubuntu0.6+esm6"},{"binary_name":"libpython2.7-stdlib","binary_version":"2.7.6-8ubuntu0.6+esm6"},{"binary_name":"libpython2.7-testsuite","binary_version":"2.7.6-8ubuntu0.6+esm6"},{"binary_name":"python2.7","binary_version":"2.7.6-8ubuntu0.6+esm6"},{"binary_name":"python2.7-examples","binary_version":"2.7.6-8ubuntu0.6+esm6"},{"binary_name":"python2.7-minimal","binary_version":"2.7.6-8ubuntu0.6+esm6"}],"availability":"Available 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