{"id":"CVE-2011-4407","url":"https://www.cyber-defence.io/tools/cve/CVE-2011-4407","generatedAt":"2026-10-27T17:57:02.110Z","title":"ppa.py in Software Properties before 0.81.13.3 does not validate the server certificate when downloading PPA GPG key fingerprints, which allows man-in-the-middle (MITM) attackers to spoof GPG keys for a package repository.","description":"ppa.py in Software Properties before 0.81.13.3 does not validate the server certificate when downloading PPA GPG key fingerprints, which allows man-in-the-middle (MITM) attackers to spoof GPG keys for a package repository.","published":"2014-05-14T00:55:05.000Z","lastModified":"2026-06-16T23:34:53.000Z","status":"Modified","sourceIdentifier":"security@ubuntu.com","cvss":{"version":"2.0","score":4.3,"severity":"MEDIUM","vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N"},"cwe":["CWE-20"],"affected":["canonical/software-properties","canonical/ubuntu linux"],"epss":{"score":0.00632,"percentile":0.50012,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.63%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://www.ubuntu.com/usn/USN-1352-1","source":"security@ubuntu.com"},{"url":"https://bugs.launchpad.net/ubuntu/%2Bsource/software-properties/%2Bbug/915210","source":"security@ubuntu.com"},{"url":"http://www.ubuntu.com/usn/USN-1352-1","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugs.launchpad.net/ubuntu/%2Bsource/software-properties/%2Bbug/915210","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2011-4407","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}