{"vulnerability": "CVE-2020-8555", "sightings": [{"uuid": "5443d771-9f7d-4c57-85eb-a3881c0fcab3", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2020-8555", "type": "seen", "source": "https://t.me/VulnerabilityNews/26410", "content": "As mitigations to a report from 2019 and CVE-2020-8555, Kubernetes attempts to prevent proxied connections from accessing link-local or localhost networks when making user-driven connections to Services, Pods, Nodes, or StorageClass service providers. As part of this mitigation Kubernetes does a DNS name resolution check and validates that response IPs are not in the link-local (169.254.0.0/16) or localhost (127.0.0.0/8) range. Kubernetes then performs a second DNS resolution without validation for the actual connection. If a non-standard DNS server returns different non-cached responses, a user may be able to bypass the proxy IP restriction and access private networks on the control plane.\nPublished at: February 01, 2022 at 12:15PM\nView on website", "creation_timestamp": "2022-02-01T14:42:39.000000Z"}, {"uuid": "65e0e51f-4dbe-4872-9a78-63017e871634", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2020-8555", "type": "seen", "source": "https://t.me/k8security/88", "content": "\u0421\u043e\u0432\u0441\u0435\u043c \u043d\u0435\u0434\u0430\u0432\u043d\u043e \u043d\u0430 \u043a\u0430\u043d\u0430\u043b\u0435 CNCF \u0431\u044b\u043b \u0432\u0435\u0431\u0438\u043d\u0430\u0440 \u0441 \u0438\u043d\u0442\u0440\u0438\u0433\u0443\u044e\u0449\u0435\u043c \u043d\u0430\u0437\u0432\u0430\u043d\u0438\u0435\u043c \"Kubernetes Security Anatomy and the Recently Disclosed CVEs\". \u0420\u0435\u0447\u044c \u0442\u0430\u043c \u0438\u0434\u0435\u0442 \u043e \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0435\u043d\u043d\u044b\u0445 \u043d\u0430\u043c\u0438 \u0440\u0430\u043d\u0435\u0435: CVE-2020-8555, CVE-2020-8557, CVE-2020-8558, CVE-2020-8559, CVE-2020-10749. \u0414\u043e\u043a\u043b\u0430\u0434\u0447\u0438\u043a \u0441\u043d\u0430\u0447\u0430\u043b\u0430 \u043f\u043e\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u0442, \u0447\u0442\u043e \u0434\u0430\u043d\u043d\u044b\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u043d\u043e \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0438\u0442\u044c \u043f\u043e \u0432\u0435\u0440\u0441\u0438\u0438 Kubernetes, \u0430 \u0434\u0430\u043b\u0435\u0435 \u043f\u0435\u0440\u0435\u0441\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u0442 \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u0438\u0437 \u0438\u0445 \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0439 \u0441 \u0440\u0430\u0441\u0441\u044b\u043b\u043a\u0438 Kubernetes ... \u041f\u043b\u044e\u0441 \u043d\u0435\u043c\u043d\u043e\u0433\u043e \u0440\u0435\u043a\u043b\u0430\u043c\u044b \u0432 \u043a\u043e\u043d\u0446\u0435.", "creation_timestamp": "2020-07-22T07:09:48.000000Z"}, {"uuid": "8a7ffe2e-673d-4d4b-890f-3dc07bcc6a28", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2020-8555", "type": "seen", "source": "https://t.me/k8security/65", "content": "CVE-2020-8555: Half-Blind SSRF \u0432 kube-controller-manage\n\nLevel: Medium (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N)\n\n\u0414\u0430\u043d\u043d\u0430\u044f Server Side Request Forgery (SSRF) \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u043d\u044b\u043c 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\u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u044b\u043c \u0442\u0438\u043f\u043e\u043c Volume (GlusterFS, Quobyte, StorageFS, ScaleIO) \u0438\u043b\u0438  \u0440\u0430\u0437\u0440\u0435\u0448\u0435\u043d\u0438\u0435\u043c \u043d\u0430 \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u0435 StorageClass \u043c\u043e\u0436\u0435\u0442 \u0437\u0430\u0441\u0442\u0430\u0432\u0438\u0442\u044c kube-controller-manager \u0434\u0435\u043b\u0430\u0442\u044c GET \u0438\u043b\u0438 POST \u0437\u0430\u043f\u0440\u043e\u0441\u044b (\u0431\u0435\u0437 \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u044f \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0433\u043e \u0442\u0435\u043b\u0430 \u0437\u0430\u043f\u0440\u043e\u0441\u0430) \u0438\u0437 master \u0445\u043e\u0441\u0442 \u0441\u0435\u0442\u0438 \u043f\u043e \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u043d\u043e\u043c\u0443 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u043c \u043d\u0435 \u043f\u0440\u043e\u0432\u0435\u0440\u0435\u043d\u043d\u043e\u043c\u0443 URL.\n\n\u0422\u0430\u043a\u0436\u0435 \u0441\u043e\u043e\u0431\u0449\u0430\u0435\u0442\u0441\u044f \u0447\u0442\u043e \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0439 \u043d\u0435 \u0443\u0442\u0435\u043a\u0430\u0435\u0442, \u0442\u043e \u0432 \u0443\u0442\u0435\u043a\u0430\u0435\u043c\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u0447\u0442\u043e-\u043d\u0438\u0431\u0443\u0434\u044c \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u043e\u0435.\n\n\u0415\u0441\u043b\u0438 \u043f\u043e\u0441\u043c\u043e\u0442\u0440\u0435\u0442\u044c \u043f\u0430\u0442\u0447, \u0442\u043e \u043c\u043e\u0436\u043d\u043e \u0443\u0432\u0438\u0434\u0435\u0442\u044c \u043a\u0443\u0447\u0443 \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u043d\u044b\u0445 \u043f\u0440\u043e\u0432\u0435\u0440\u043e\u043a \u0441 \u043a\u043e\u043c\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u0435\u043c: \"don't log error details from client calls in events\".", "creation_timestamp": "2020-06-02T13:13:22.000000Z"}, {"uuid": "76f3d4cc-5cb9-44d4-9f4f-ee693e5d9036", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2020-8555", "type": "published-proof-of-concept", "source": "https://t.me/CyberSecurityTechnologies/1224", "content": "#exploit\n1. CVE-2020-7350:\nMetasploit Framework <5.0.85 - OS Command Injection\nhttps://medium.com/faraday/analysis-of-cve-2020-7350-dcda2ff8a3d6\n\n2. CVE-2020-8555:\nSSSF in Kubernetes kube-controller-manager\nhttps://medium.com/@BreizhZeroDayHunters/when-its-not-only-about-a-kubernetes-cve-8f6b448eafa8", "creation_timestamp": "2024-10-28T14:37:49.000000Z"}]}