{"id":"CVE-2015-1777","aliases":["EUVD-2015-1904","GHSA-7ff6-526r-2f67","UBUNTU-CVE-2015-1777"],"status":"published","title":"rhnreg_ks in Red Hat Network Client Tools (aka rhn-client-tools) on Red Hat Gluster Storage 2.1...","description":"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.","severity":{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01191,"percentile":0.68178,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-295"],"published":"2018-04-12T15:00:00Z","modified":"2026-06-17T00:22:58Z","affected":[{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"rhn-client-tools","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8.26-4"]}],"products":[{"vendor":"redhat","product":"rhn-client-tools"}],"references":[{"url":"http://www.securityfocus.com/bid/72943","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1198740","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking"]},{"url":"http://www.openwall.com/lists/oss-security/2015/03/04/7","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2015-1777"},{"url":"https://github.com/advisories/GHSA-7ff6-526r-2f67"},{"url":"https://ubuntu.com/security/CVE-2015-1777","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2015-1777","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2015-1777","description":"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.","status":"published","published":"2018-04-12T15:00:00Z","modified":"2024-08-06T04:54:15.986Z","updated_at":"2026-11-02T14:35:44.046042Z"}],"euvd":[{"id":"EUVD-2015-1904","description":"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.","status":"published","published":"2018-04-12T15:00:00Z","modified":"2024-08-06T04:54:15Z","updated_at":"2026-11-03T02:22:14.639145Z"}],"ghsa":[{"id":"GHSA-7ff6-526r-2f67","title":"rhnreg_ks in Red Hat Network Client Tools (aka rhn-client-tools) on Red Hat Gluster Storage 2.1...","description":"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.","status":"published","published":"2022-05-14T01:08:49Z","modified":"2023-02-02T05:03:08Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:51:34.49846Z"}],"nvd":[{"id":"CVE-2015-1777","description":"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.","status":"published","published":"2018-04-12T15:29:00.333Z","modified":"2026-06-17T00:22:58.407Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:03:19.244941Z"}],"osv":[{"id":"UBUNTU-CVE-2015-1777","description":"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.","status":"published","published":"2018-04-12T15:29:00Z","modified":"2025-10-24T04:45:20Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:10.045446Z"}]}}