{"id":"UBUNTU-CVE-2015-1777","details":"rhnreg_ks in Red Hat Network Client Tools (aka rhn-client-tools) on Red Hat Gluster Storage 2.1 and Enterprise Linux (RHEL) 5, 6, and 7 does not properly validate hostnames in X.509 certificates from SSL servers, which allows remote attackers to prevent system registration via a man-in-the-middle attack.","modified":"2025-10-24T04:45:20Z","published":"2018-04-12T15:29:00Z","upstream":["CVE-2015-1777"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2015-1777"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2015-1777"}],"affected":[{"package":{"name":"rhn-client-tools","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/rhn-client-tools@1.8.26-4?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8.26-4"],"ecosystem_specific":{"binaries":[{"binary_name":"rhn-client-tools","binary_version":"1.8.26-4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2015/UBUNTU-CVE-2015-1777.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"type":"Ubuntu","score":"low"}]}