Vulnerability-Lookup

BDU:2023-02885

Vulnerability from fstec - Published: 18.04.2023

Title

Уязвимость компонента Webhook программного обеспечения управления кластерами Kubernets Rancher, позволяющая нарушителю повысить свои привилегии

Description

Уязвимость компонента Webhook программного обеспечения управления кластерами Kubernets Rancher связана с недостатками разграничения доступа. Эксплуатация уязвимости может позволить нарушителю, действующему удалённо, повысить свои привилегии

Severity


                    
                      AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Vendor

Rancher Labs

Software Name

Rancher

Software Version

от 2.6.0 до 2.7.2 включительно (Rancher)

Possible Mitigations

Использование рекомендаций: https://github.com/rancher/webhook/commit/a4a498613b43a3ee93c5ab06742a3bc8adace45d https://github.com/rancher/rancher/security/advisories/GHSA-6m9f-pj6w-w87g Компенсирующие меры: Рекомендуется вручную перенастроить Webhook с помощью приведенного ниже сценария. Обратите внимание, что скрипт должен запускаться внутри local кластера или с kubeconfig, указывающим на local кластер с правами администратора: #!/bin/bash set -euo pipefail function prereqs() { if ! [ -x "$(command -v kubectl)" ]; then echo "error: kubectl is not installed." >&2 exit 1 fi if [[ -z "$(kubectl config view -o jsonpath='{.clusters[].cluster.server}')" ]]; then echo "error: No kubernetes cluster found on kubeconfig." >&2 exit 1 fi } function restart_deployment(){ kubectl rollout restart deployment rancher-webhook -n cattle-system kubectl rollout status deployment rancher-webhook -n cattle-system --timeout=30s } function workaround() { echo "Cluster: $(kubectl config view -o jsonpath='{.clusters[].cluster.server}')" if ! kubectl get validatingwebhookconfigurations.admissionregistration.k8s.io rancher.cattle.io > /dev/null 2>&1; then echo "webhook rancher.cattle.io not found, restarting deployment:" restart_deployment echo "waiting for webhook configuration" sleep 15s fi local -i webhooks webhooks="$(kubectl get validatingwebhookconfigurations.admissionregistration.k8s.io rancher.cattle.io --no-headers | awk '{ print $2 }')" if [ "${webhooks}" == "0" ]; then echo "Webhook misconfiguration status: Cluster is affected by CVE-2023-22651" echo "Running workaround:" kubectl delete validatingwebhookconfiguration rancher.cattle.io restart_deployment ret=$? if [ $ret -eq 0 ]; then echo "Webhook restored, CVE-2023-22651 is fixed" else echo "error trying to restart deployment. try again in a few seconds." fi else echo "Webhook misconfiguration status: not present (skipping)" fi echo "Done" } function main() { prereqs workaround } main

Reference

https://bugzilla.suse.com/show_bug.cgi?id=CVE-2023-22651 https://github.com/rancher/rancher/security/advisories/GHSA-6m9f-pj6w-w87g

CWE

CWE-269

JSON

To clipboard

{
  "CVSS 2.0": "AV:N/AC:L/Au:S/C:C/I:C/A:C",
  "CVSS 3.0": "AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": null,
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "Rancher Labs",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "\u043e\u0442 2.6.0 \u0434\u043e 2.7.2 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Rancher)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439:\nhttps://github.com/rancher/webhook/commit/a4a498613b43a3ee93c5ab06742a3bc8adace45d\nhttps://github.com/rancher/rancher/security/advisories/GHSA-6m9f-pj6w-w87g\n\n\u041a\u043e\u043c\u043f\u0435\u043d\u0441\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u043c\u0435\u0440\u044b:\n\u0420\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0443\u0435\u0442\u0441\u044f \u0432\u0440\u0443\u0447\u043d\u0443\u044e \u043f\u0435\u0440\u0435\u043d\u0430\u0441\u0442\u0440\u043e\u0438\u0442\u044c Webhook \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u043f\u0440\u0438\u0432\u0435\u0434\u0435\u043d\u043d\u043e\u0433\u043e \u043d\u0438\u0436\u0435 \u0441\u0446\u0435\u043d\u0430\u0440\u0438\u044f. \u041e\u0431\u0440\u0430\u0442\u0438\u0442\u0435 \u0432\u043d\u0438\u043c\u0430\u043d\u0438\u0435, \u0447\u0442\u043e \u0441\u043a\u0440\u0438\u043f\u0442 \u0434\u043e\u043b\u0436\u0435\u043d \u0437\u0430\u043f\u0443\u0441\u043a\u0430\u0442\u044c\u0441\u044f \u0432\u043d\u0443\u0442\u0440\u0438 local \u043a\u043b\u0430\u0441\u0442\u0435\u0440\u0430 \u0438\u043b\u0438 \u0441 kubeconfig, \u0443\u043a\u0430\u0437\u044b\u0432\u0430\u044e\u0449\u0438\u043c \u043d\u0430 local \u043a\u043b\u0430\u0441\u0442\u0435\u0440 \u0441 \u043f\u0440\u0430\u0432\u0430\u043c\u0438 \u0430\u0434\u043c\u0438\u043d\u0438\u0441\u0442\u0440\u0430\u0442\u043e\u0440\u0430:\n#!/bin/bash\n\nset -euo pipefail\n\nfunction prereqs() {\n    if ! [ -x \"$(command -v kubectl)\" ]; then\n      echo \"error: kubectl is not installed.\" \u003e\u00262\n      exit 1\n    fi\n\n    if [[ -z \"$(kubectl config view -o jsonpath=\u0027{.clusters[].cluster.server}\u0027)\" ]]; then\n        echo \"error: No kubernetes cluster found on kubeconfig.\" \u003e\u00262\n        exit 1\n    fi\n}\n\nfunction restart_deployment(){\n    kubectl rollout restart deployment rancher-webhook -n cattle-system\n    kubectl rollout status deployment rancher-webhook -n cattle-system --timeout=30s\n}\n\nfunction workaround() {\n    echo \"Cluster: $(kubectl config view -o jsonpath=\u0027{.clusters[].cluster.server}\u0027)\"\n\n    if ! kubectl get validatingwebhookconfigurations.admissionregistration.k8s.io rancher.cattle.io \u003e /dev/null 2\u003e\u00261; then\n        echo \"webhook rancher.cattle.io not found, restarting deployment:\"\n        restart_deployment\n\n        echo \"waiting for webhook configuration\"\n        sleep 15s\n    fi\n\n    local -i webhooks\n    webhooks=\"$(kubectl get validatingwebhookconfigurations.admissionregistration.k8s.io rancher.cattle.io --no-headers | awk \u0027{ print $2 }\u0027)\"\n\n    if [ \"${webhooks}\" == \"0\" ]; then\n        echo \"Webhook misconfiguration status: Cluster is affected by CVE-2023-22651\"\n        \n        echo \"Running workaround:\"\n        kubectl delete validatingwebhookconfiguration rancher.cattle.io\n        restart_deployment\n\n        ret=$?\n        if [ $ret -eq 0 ]; then\n            echo \"Webhook restored, CVE-2023-22651 is fixed\"\n        else\n            echo \"error trying to restart deployment. try again in a few seconds.\"\n        fi\n    else\n        echo \"Webhook misconfiguration status: not present (skipping)\"\n    fi\n\n    echo \"Done\"\n}\n\nfunction main() {\n    prereqs\n    workaround\n}\n\nmain",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "18.04.2023",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "29.05.2023",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "29.05.2023",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2023-02885",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b \u0434\u0440\u0443\u0433\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "CVE-2023-22651",
  "\u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430",
  "\u041a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": "Rancher",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": null,
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0430 Webhook \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u043a\u043b\u0430\u0441\u0442\u0435\u0440\u0430\u043c\u0438 Kubernets Rancher, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u043f\u043e\u0432\u044b\u0441\u0438\u0442\u044c \u0441\u0432\u043e\u0438 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0438",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u041d\u0435\u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0435 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u044f\u043c\u0438 (CWE-269)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0430 Webhook \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u043a\u043b\u0430\u0441\u0442\u0435\u0440\u0430\u043c\u0438 Kubernets Rancher \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043d\u0435\u0434\u043e\u0441\u0442\u0430\u0442\u043a\u0430\u043c\u0438 \u0440\u0430\u0437\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u044f \u0434\u043e\u0441\u0442\u0443\u043f\u0430. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u043c\u0443 \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e, \u043f\u043e\u0432\u044b\u0441\u0438\u0442\u044c \u0441\u0432\u043e\u0438 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0438",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": null,
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u041d\u0430\u0440\u0443\u0448\u0435\u043d\u0438\u0435 \u0430\u0432\u0442\u043e\u0440\u0438\u0437\u0430\u0446\u0438\u0438",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://bugzilla.suse.com/show_bug.cgi?id=CVE-2023-22651 \nhttps://github.com/rancher/rancher/security/advisories/GHSA-6m9f-pj6w-w87g",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u041f\u0440\u0438\u043a\u043b\u0430\u0434\u043d\u043e\u0435 \u041f\u041e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-269",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0412\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 9)\n\u041a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 9,9)"
}

CVE-2023-22651 (GCVE-0-2023-22651)

Vulnerability from cvelistv5 – Published: 2023-05-04 07:53 – Updated: 2025-01-29 16:49

Summary

Improper Privilege Management vulnerability in SUSE Rancher allows Privilege Escalation. A failure in the update logic of Rancher's admission Webhook may lead to the misconfiguration of the Webhook. This component enforces validation rules and security checks before resources are admitted into the Kubernetes cluster. The issue only affects users that upgrade from 2.6.x or 2.7.x to 2.7.2. Users that did a fresh install of 2.7.2 (and did not follow an upgrade path) are not affected.

Severity

9.9 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CWE

CWE-269 - Improper Privilege Management

Assigner

suse

References

2 references

URL	Tags
https://bugzilla.suse.com/show_bug.cgi?id=CVE-202…
https://github.com/rancher/rancher/security/advis…

Impacted products

1 product

Vendor	Product	Version
SUSE	Rancher	Affected: 2.6.0 , ≤ 2.7.2 (2.7.2) Unaffected: 2.7.3

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T10:13:49.435Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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    "datePublished": "2023-05-04T07:53:49.876Z",
    "dateReserved": "2023-01-05T10:40:08.607Z",
    "dateUpdated": "2025-01-29T16:49:36.675Z",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

BDU:2023-02885

CVE-2023-22651 (GCVE-0-2023-22651)

Tags

Sightings

Nomenclature