{"id":"CVE-2011-4409","aliases":["EUVD-2011-4338","GHSA-8m4g-h664-74qj"],"status":"published","title":"The Ubuntu One Client for Ubuntu 10.04 LTS, 11.04, 11.10, and 12.04 LTS does not properly...","description":"The Ubuntu One Client for Ubuntu 10.04 LTS, 11.04, 11.10, and 12.04 LTS does not properly validate SSL certificates, which allows remote attackers to spoof a server and modify or read sensitive information via a man-in-the-middle (MITM) attack.","severity":{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01735,"percentile":0.7782,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2012-06-16T00:00:00Z","modified":"2026-06-16T23:34:52Z","products":[{"vendor":"canonical","product":"ubuntu_linux"}],"references":[{"url":"http://secunia.com/advisories/49442","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory"]},{"url":"http://ubuntu.com/usn/usn-1465-3","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred"]},{"url":"http://ubuntu.com/usn/usn-1465-1","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","Vendor Advisory"]},{"url":"http://www.osvdb.org/82748","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://ubuntu.com/usn/usn-1465-2","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","Vendor Advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/76113","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www.securityfocus.com/bid/53828","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-4409"},{"url":"https://github.com/advisories/GHSA-8m4g-h664-74qj"}],"sources":{"cve":[{"id":"CVE-2011-4409","description":"The Ubuntu One Client for Ubuntu 10.04 LTS, 11.04, 11.10, and 12.04 LTS does not properly validate SSL certificates, which allows remote attackers to spoof a server and modify or read sensitive information via a man-in-the-middle (MITM) attack.","status":"published","published":"2012-06-16T00:00:00Z","modified":"2024-08-07T00:09:18.314Z","updated_at":"2026-11-02T14:35:37.989579Z"}],"euvd":[{"id":"EUVD-2011-4338","description":"The Ubuntu One Client for Ubuntu 10.04 LTS, 11.04, 11.10, and 12.04 LTS does not properly validate SSL certificates, which allows remote attackers to spoof a server and modify or read sensitive information via a man-in-the-middle (MITM) attack.","status":"published","published":"2012-06-16T00:00:00Z","modified":"2024-08-07T00:09:18Z","updated_at":"2026-11-03T01:39:48.961231Z"}],"ghsa":[{"id":"GHSA-8m4g-h664-74qj","title":"The Ubuntu One Client for Ubuntu 10.04 LTS, 11.04, 11.10, and 12.04 LTS does not properly...","description":"The Ubuntu One Client for Ubuntu 10.04 LTS, 11.04, 11.10, and 12.04 LTS does not properly validate SSL certificates, which allows remote attackers to spoof a server and modify or read sensitive information via a man-in-the-middle (MITM) attack.","status":"published","published":"2022-05-17T01:52:06Z","modified":"2023-02-03T05:05:53Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:53:48.81294Z"}],"nvd":[{"id":"CVE-2011-4409","description":"The Ubuntu One Client for Ubuntu 10.04 LTS, 11.04, 11.10, and 12.04 LTS does not properly validate SSL certificates, which allows remote attackers to spoof a server and modify or read sensitive information via a man-in-the-middle (MITM) attack.","status":"published","published":"2012-06-16T00:55:05.657Z","modified":"2026-06-16T23:34:52.983Z","cvss":[{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:02:12.272092Z"}]}}