{"id":"CVE-2015-1843","aliases":["EUVD-2015-1954","GHSA-m568-g4fp-65j5","RHSA-2015:0776"],"status":"published","title":"The Red Hat docker package before 1.5.0-28, when using the --add-registry option, falls back to...","description":"The Red Hat docker package before 1.5.0-28, when using the --add-registry option, falls back to HTTP when the HTTPS connection to the registry fails, which allows man-in-the-middle attackers to conduct downgrade attacks and obtain authentication and image data by leveraging a network position between the client and the registry to block HTTPS traffic.  NOTE: this vulnerability exists because of a CVE-2014-5277 regression.","severity":{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01618,"percentile":0.76205,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20"],"published":"2015-04-06T15:00:00Z","modified":"2026-06-27T10:02:03Z","fixes":[{"ecosystem":"Red Hat:rhel_extras_other:7","package":"atomic","fixed_in":["0:0-0.9.git4ff7dbd.el7"],"sources":["osv"]},{"ecosystem":"Red Hat:rhel_extras_other:7","package":"docker","fixed_in":["0:1.5.0-28.el7"],"sources":["osv"]},{"ecosystem":"Red Hat:rhel_extras_other:7","package":"docker-logrotate","fixed_in":["0:1.5.0-28.el7"],"sources":["osv"]},{"ecosystem":"Red Hat:rhel_extras_other:7","package":"docker-python","fixed_in":["0:1.0.0-22.el7"],"sources":["osv"]},{"ecosystem":"Red Hat:rhel_extras_other:7","package":"python-websocket-client","fixed_in":["0:0.14.1-65.el7"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Red Hat:rhel_extras_other:7","package":"atomic","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:0-0.9.git4ff7dbd.el7"}]}]},{"source":"osv","ecosystem":"Red Hat:rhel_extras_other:7","package":"docker","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.5.0-28.el7"}]}]},{"source":"osv","ecosystem":"Red Hat:rhel_extras_other:7","package":"docker-logrotate","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.5.0-28.el7"}]}]},{"source":"osv","ecosystem":"Red Hat:rhel_extras_other:7","package":"docker-python","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.0.0-22.el7"}]}]},{"source":"osv","ecosystem":"Red Hat:rhel_extras_other:7","package":"python-websocket-client","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:0.14.1-65.el7"}]}]}],"products":[{"vendor":"redhat","product":"docker"}],"references":[{"url":"http://rhn.redhat.com/errata/RHSA-2015-0776.html","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred","Vendor Advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1206443","tags":["x_refsource_CONFIRM","x_transferred","report"]},{"url":"http://www.securityfocus.com/bid/73936","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2015-1843","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-m568-g4fp-65j5"},{"url":"https://access.redhat.com/errata/RHSA-2015:0776","tags":["advisory"]},{"url":"https://access.redhat.com/security/updates/classification/#moderate","tags":["article"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2015/rhsa-2015_0776.json","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2015-1843","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2015-1843","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2015-1843","description":"The Red Hat docker package before 1.5.0-28, when using the --add-registry option, falls back to HTTP when the HTTPS connection to the registry fails, which allows man-in-the-middle attackers to conduct downgrade attacks and obtain authentication and image data by leveraging a network position between the client and the registry to block HTTPS traffic.  NOTE: this vulnerability exists because of a CVE-2014-5277 regression.","status":"published","published":"2015-04-06T15:00:00Z","modified":"2024-08-06T04:54:16.334Z","updated_at":"2026-11-02T14:35:44.046042Z"}],"euvd":[{"id":"EUVD-2015-1954","description":"The Red Hat docker package before 1.5.0-28, when using the --add-registry option, falls back to HTTP when the HTTPS connection to the registry fails, which allows man-in-the-middle attackers to conduct downgrade attacks and obtain authentication and image data by leveraging a network position between the client and the registry to block HTTPS traffic.  NOTE: this vulnerability exists because of a CVE-2014-5277 regression.","status":"published","published":"2015-04-06T15:00:00Z","modified":"2024-08-06T04:54:16Z","updated_at":"2026-11-03T02:22:14.212001Z"}],"ghsa":[{"id":"GHSA-m568-g4fp-65j5","title":"The Red Hat docker package before 1.5.0-28, when using the --add-registry option, falls back to...","description":"The Red Hat docker package before 1.5.0-28, when using the --add-registry option, falls back to HTTP when the HTTPS connection to the registry fails, which allows man-in-the-middle attackers to conduct downgrade attacks and obtain authentication and image data by leveraging a network position between the client and the registry to block HTTPS traffic.  NOTE: this vulnerability exists because of a CVE-2014-5277 regression.","status":"published","published":"2022-05-17T03:50:59Z","modified":"2023-01-27T05:09:21Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:43:22.211542Z"}],"nvd":[{"id":"CVE-2015-1843","description":"The Red Hat docker package before 1.5.0-28, when using the --add-registry option, falls back to HTTP when the HTTPS connection to the registry fails, which allows man-in-the-middle attackers to conduct downgrade attacks and obtain authentication and image data by leveraging a network position between the client and the registry to block HTTPS traffic.  NOTE: this vulnerability exists because of a CVE-2014-5277 regression.","status":"published","published":"2015-04-06T15:59:00.073Z","modified":"2026-06-17T00:23:06.13Z","cvss":[{"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-20"],"updated_at":"2026-11-02T14:03:04.095849Z"}],"osv":[{"id":"RHSA-2015:0776","title":"Red Hat Security Advisory: docker security update","status":"published","published":"2024-09-13T10:11:12Z","modified":"2026-06-27T10:02:03Z","updated_at":"2026-11-02T15:53:03.182161Z"}]}}