{"id":"CVE-2011-4408","aliases":["EUVD-2011-4337","GHSA-c4ch-35xg-vqch"],"status":"published","title":"The Single Sign On Client (ubuntu-sso-client) for Ubuntu 11.04 and 11.10 does not properly...","description":"The Single Sign On Client (ubuntu-sso-client) for Ubuntu 11.04 and 11.10 does not properly validate SSL certificates when using HTTPS, which allows remote attackers to spoof a server and modify or read sensitive data via a man-in-the-middle (MITM) attack.","severity":{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01229,"percentile":0.69097,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2012-06-16T00:00:00Z","modified":"2026-06-16T23:34:52Z","products":[{"vendor":"canonical","product":"ubuntu_linux"}],"references":[{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/76112","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www.ubuntu.com/usn/USN-1464-1","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","Patch","Vendor Advisory"]},{"url":"http://osvdb.org/82747","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://www.securityfocus.com/bid/53829","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://secunia.com/advisories/49448","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-4408"},{"url":"https://github.com/advisories/GHSA-c4ch-35xg-vqch"}],"sources":{"cve":[{"id":"CVE-2011-4408","description":"The Single Sign On Client (ubuntu-sso-client) for Ubuntu 11.04 and 11.10 does not properly validate SSL certificates when using HTTPS, which allows remote attackers to spoof a server and modify or read sensitive data via a man-in-the-middle (MITM) attack.","status":"published","published":"2012-06-16T00:00:00Z","modified":"2024-08-07T00:09:18.319Z","updated_at":"2026-11-02T14:35:37.989579Z"}],"euvd":[{"id":"EUVD-2011-4337","description":"The Single Sign On Client (ubuntu-sso-client) for Ubuntu 11.04 and 11.10 does not properly validate SSL certificates when using HTTPS, which allows remote attackers to spoof a server and modify or read sensitive data 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-c4ch-35xg-vqch","title":"The Single Sign On Client (ubuntu-sso-client) for Ubuntu 11.04 and 11.10 does not properly...","description":"The Single Sign On Client (ubuntu-sso-client) for Ubuntu 11.04 and 11.10 does not properly validate SSL certificates when using HTTPS, which allows remote attackers to spoof a server and modify or read sensitive data via a man-in-the-middle (MITM) attack.","status":"published","published":"2022-05-17T01:52:07Z","modified":"2023-02-03T05:05:50Z","updated_at":"2026-11-02T14:53:48.348375Z"}],"nvd":[{"id":"CVE-2011-4408","description":"The Single Sign On Client (ubuntu-sso-client) for Ubuntu 11.04 and 11.10 does not properly validate SSL certificates when using HTTPS, which allows remote attackers to spoof a server and modify or read sensitive data via a man-in-the-middle (MITM) attack.","status":"published","published":"2012-06-16T00:55:05.547Z","modified":"2026-06-16T23:34:52.883Z","cvss":[{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:02:12.272092Z"}]}}