{"id":"USN-4613-1","summary":"python-cryptography vulnerability","details":"Hubert Kario discovered that python-cryptography incorrectly handled certain decryption.\nAn attacker could possibly use this issue to expose sensitive information.\n","modified":"2026-02-10T04:41:58Z","published":"2020-11-03T12:17:34Z","related":["UBUNTU-CVE-2020-25659"],"upstream":["CVE-2020-25659","UBUNTU-CVE-2020-25659"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4613-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-25659"}],"affected":[{"package":{"name":"python-cryptography","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/python-cryptography@1.2.3-1ubuntu0.3?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.3-1ubuntu0.3"}]}],"versions":["1.0.1-1ubuntu1","1.0.2-1","1.1-1","1.1.1-1","1.1.1-1ubuntu1","1.1.1-1ubuntu2","1.1.1-1ubuntu3","1.2.2-2","1.2.3-1","1.2.3-1ubuntu0.1","1.2.3-1ubuntu0.2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1.2.3-1ubuntu0.3","binary_name":"python-cryptography"},{"binary_version":"1.2.3-1ubuntu0.3","binary_name":"python3-cryptography"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:16.04:LTS","cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2020-25659"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4613-1.json"}},{"package":{"name":"python-cryptography","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/python-cryptography@2.1.4-1ubuntu1.4?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.4-1ubuntu1.4"}]}],"versions":["1.9-1","2.1.3-3","2.1.4-1","2.1.4-1build1","2.1.4-1build2","2.1.4-1ubuntu1","2.1.4-1ubuntu1.1","2.1.4-1ubuntu1.2","2.1.4-1ubuntu1.3"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"2.1.4-1ubuntu1.4","binary_name":"python-cryptography"},{"binary_version":"2.1.4-1ubuntu1.4","binary_name":"python3-cryptography"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:18.04:LTS","cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2020-25659"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4613-1.json"}},{"package":{"name":"python-cryptography","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/python-cryptography@2.8-3ubuntu0.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.8-3ubuntu0.1"}]}],"versions":["2.6.1-3.1","2.6.1-4","2.6.1-4ubuntu1","2.8-1ubuntu2","2.8-2","2.8-3"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"2.8-3ubuntu0.1","binary_name":"python-cryptography"},{"binary_version":"2.8-3ubuntu0.1","binary_name":"python3-cryptography"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:20.04:LTS","cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2020-25659"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4613-1.json"}}],"schema_version":"1.7.3"}