{"id":"CVE-2018-1002102","aliases":["DEBIAN-CVE-2018-1002102","EUVD-2018-2081","RHSA-2020:5363","UBUNTU-CVE-2018-1002102"],"status":"published","title":"Kubernetes API server follows unvalidated redirects from streaming Kubelet endpoints","description":"Improper validation of URL redirection in the Kubernetes API server in versions prior to v1.14.0 allows an attacker-controlled Kubelet to redirect API server requests from streaming endpoints to arbitrary hosts. Impacted API servers will follow the redirect as a GET request with client-certificate credentials for authenticating to the Kubelet.","severity":{"version":"3.1","score":2.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:N/A:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00654,"percentile":0.51638,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-601"],"published":"2019-12-05T16:05:18Z","modified":"2026-10-24T10:49:31Z","fixes":[{"ecosystem":"Debian:12","package":"kubernetes","fixed_in":["1.17.4-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"kubernetes","fixed_in":["1.17.4-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"kubernetes","fixed_in":["1.17.4-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"kubernetes","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.17.4-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"kubernetes","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.17.4-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"kubernetes","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.17.4-1"}]}]},{"source":"osv","ecosystem":"Red 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Advisory","report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Q56CULSH7F7BC4NPS67ZS23ZCLL5TIVK/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2018-1002102","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2020:5363","tags":["advisory"]},{"url":"https://access.redhat.com/security/updates/classification/#moderate","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1784602","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1851422","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1860906","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1880784","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1895445","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1896696","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1898906","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1899609","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1903524","tags":["report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2020/rhsa-2020_5363.json","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2018-1002102","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-1002102","tags":["advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-1002102","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2020-8559","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-8559","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-8559","tags":["advisory"]},{"url":"https://groups.google.com/g/kubernetes-security-announce/c/JAIGG5yNROs","tags":["article"]},{"url":"https://ubuntu.com/security/CVE-2018-1002102","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2018-1002102","title":"Kubernetes API server follows unvalidated redirects from streaming Kubelet endpoints","description":"Improper validation of URL redirection in the Kubernetes API server in versions prior to v1.14.0 allows an attacker-controlled Kubelet to redirect API server requests from streaming endpoints to arbitrary hosts. Impacted API servers will follow the redirect as a GET request with client-certificate credentials for authenticating to the Kubelet.","status":"published","published":"2019-12-05T16:05:18.042Z","modified":"2024-09-17T00:56:37.681Z","cvss":[{"version":"3.1","score":2.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:N/A:N","level":"low","assessor":"cna"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T14:35:09.139955Z"}],"euvd":[{"id":"EUVD-2018-2081","description":"Improper validation of URL redirection in the Kubernetes API server in versions prior to v1.14.0 allows an attacker-controlled Kubelet to redirect API server requests from streaming endpoints to arbitrary hosts. Impacted API servers will follow the redirect as a GET request with client-certificate credentials for authenticating to the Kubelet.","status":"published","published":"2019-12-05T16:05:18Z","modified":"2024-09-17T00:56:37Z","cvss":[{"version":"3.1","score":2.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:N/A:N","level":"low"}],"updated_at":"2026-11-03T00:28:54.100116Z"}],"nvd":[{"id":"CVE-2018-1002102","description":"Improper validation of URL redirection in the Kubernetes API server in versions prior to v1.14.0 allows an attacker-controlled Kubelet to redirect API server requests from streaming endpoints to arbitrary hosts. Impacted API servers will follow the redirect as a GET request with client-certificate credentials for authenticating to the Kubelet.","status":"published","published":"2019-12-05T16:15:10.427Z","modified":"2026-06-17T01:33:20.27Z","cvss":[{"version":"3.1","score":2.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:N/A:N","level":"low","assessor":"secondary"},{"version":"3.1","score":2.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:N/A:N","level":"low","assessor":"primary"},{"version":"2.0","score":2.1,"vector":"AV:N/AC:H/Au:S/C:P/I:N/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T14:04:59.278647Z"}],"osv":[{"id":"CVE-2018-1002102","description":"Improper validation of URL redirection in the Kubernetes API server in versions prior to v1.14.0 allows an attacker-controlled Kubelet to redirect API server requests from streaming endpoints to arbitrary hosts. Impacted API servers will follow the redirect as a GET request with client-certificate credentials for authenticating to the Kubelet.","status":"published","published":"2019-12-05T16:15:10.427Z","modified":"2026-10-24T10:49:31.915006359Z","cvss":[{"version":"3.1","score":2.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:N/A:N","level":"low"}],"updated_at":"2026-11-02T15:44:07.641418Z"},{"id":"DEBIAN-CVE-2018-1002102","description":"Improper validation of URL redirection in the Kubernetes API server in versions prior to v1.14.0 allows an attacker-controlled Kubelet to redirect API server requests from streaming endpoints to arbitrary hosts. Impacted API servers will follow the redirect as a GET request with client-certificate credentials for authenticating to the Kubelet.","status":"published","published":"2019-12-05T16:15:10.427Z","modified":"2026-10-23T18:03:53.011344791Z","cvss":[{"version":"3.1","score":2.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:N/A:N","level":"low"}],"updated_at":"2026-11-02T15:45:29.988046Z"},{"id":"RHSA-2020:5363","title":"Red Hat Security Advisory: OpenShift Container Platform 3.11.346 security and bug fix update","status":"published","published":"2024-09-29T17:50:08Z","modified":"2026-02-24T10:04:27Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H","level":"medium"}],"updated_at":"2026-11-02T15:53:07.57369Z"},{"id":"UBUNTU-CVE-2018-1002102","description":"Improper validation of URL redirection in the Kubernetes API server in versions prior to v1.14.0 allows an attacker-controlled Kubelet to redirect API server requests from streaming endpoints to arbitrary hosts. Impacted API servers will follow the redirect as a GET request with client-certificate credentials for authenticating to the Kubelet.","status":"withdrawn","published":"2019-12-05T16:15:00Z","modified":"2025-07-14T06:44:56.427723Z","cvss":[{"version":"3.1","score":2.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:N/A:N","level":"low"},{"version":"3.1","score":2.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:N/A:N","level":"low"}],"updated_at":"2026-11-02T15:54:16.544091Z"}]}}