{"id":"USN-3199-2","summary":"Python Crypto regression","details":"USN-3199-1 fixed a vulnerability in the Python Cryptography Toolkit.\nUnfortunately, various programs depended on the original behavior of the Python\nCryptography Toolkit which was altered when fixing the vulnerability. This\nupdate retains the fix for the vulnerability but issues a warning rather than\nthrowing an exception. Code which produces this warning should be updated\nbecause future versions of the Python Cryptography Toolkit re-introduce the\nexception.\n\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\n It was discovered that the ALGnew function in block_template.c in the Python\n Cryptography Toolkit contained a heap-based buffer overflow vulnerability.\n A remote attacker could use this flaw to execute arbitrary code by using\n a crafted initialization vector parameter.\n","modified":"2026-02-10T04:41:05Z","published":"2017-02-17T17:34:13Z","related":["UBUNTU-CVE-2013-7459"],"upstream":["CVE-2013-7459","UBUNTU-CVE-2013-7459"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3199-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2013-7459"}],"affected":[{"package":{"name":"python-crypto","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/python-crypto@2.6.1-4ubuntu0.2?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.1-4ubuntu0.2"}]}],"versions":["2.6-5","2.6.1-2","2.6.1-2build1","2.6.1-3","2.6.1-4","2.6.1-4build1","2.6.1-4ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_version":"2.6.1-4ubuntu0.2","binary_name":"python-crypto"},{"binary_version":"2.6.1-4ubuntu0.2","binary_name":"python3-crypto"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-3199-2.json","cves_map":{"cves":[{"severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2013-7459"}],"ecosystem":"Ubuntu:14.04:LTS"}}},{"package":{"name":"python-crypto","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/python-crypto@2.6.1-6ubuntu0.16.04.2?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.1-6ubuntu0.16.04.2"}]}],"versions":["2.6.1-5build1","2.6.1-6","2.6.1-6build1","2.6.1-6ubuntu0.16.04.1"],"ecosystem_specific":{"binaries":[{"binary_version":"2.6.1-6ubuntu0.16.04.2","binary_name":"python-crypto"},{"binary_version":"2.6.1-6ubuntu0.16.04.2","binary_name":"python3-crypto"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-3199-2.json","cves_map":{"cves":[{"severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2013-7459"}],"ecosystem":"Ubuntu:16.04:LTS"}}}],"schema_version":"1.7.3"}