CVE-2023-22647: Github.com/rancher/rancher Rancher Vulnerable To Privilege Escalation Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-p976-h52c-26p6",
  "modified" : "2024-09-16T15:07:40Z",
  "published" : "2023-06-06T02:00:28Z",
  "aliases" : [ "CVE-2023-22647" ],
  "summary" : "Rancher vulnerable to Privilege Escalation via manipulation of Secrets",
  "details" : "### Impact\n\nA vulnerability has been identified which enables [Standard users](https://ranchermanager.docs.rancher.com/how-to-guides/new-user-guides/authentication-permissions-and-global-configuration/manage-role-based-access-control-rbac/global-permissions) or above to elevate their permissions to Administrator in the `local` cluster.\n\nThe `local` cluster means the cluster where Rancher is installed. It is named `local` inside the list of clusters in the Rancher UI.\n\nStandard users could leverage their existing permissions to manipulate Kubernetes secrets in the `local` cluster, resulting in the secret being deleted, but their read-level permissions to the secret being preserved. When this operation was followed-up by other specially crafted commands, it could result in the user gaining access to tokens belonging to service accounts in the `local` cluster.\n\nUsers that have custom global roles which grant `create` and `delete` permissions on `secrets` would also be able to exploit this vulnerability.\n\nUsers with [audit logs enabled](https://ranchermanager.docs.rancher.com/how-to-guides/advanced-user-guides/enable-api-audit-log#enabling-api-audit-log) in Rancher can try to identify possible abuses of this issue by going through the logs. To sieve through the data filter by `kind: Secret` with `type: provisioning.cattle.io/cloud-credential`, then investigate all log entries that affect that specific resource. A secondary check would be to filter by all operations with `Opaque` Secrets within the `cattle-global-data` namespace.\n\nAfter patching, it is recommended that users review access methods to Rancher (including RBAC policies, tokens, and host-level node access), to ensure that no changes were made to persist access to users who have leveraged this vulnerability.\n\n### Patches\n\nPatched versions include releases `2.6.13`, `2.7.4` and later versions. \n\n### Workarounds\n\nThere is no direct mitigation besides updating Rancher to a patched version.\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n\n- Reach out to the [SUSE Rancher Security team](https://github.com/rancher/rancher/security/policy) for security related inquiries.\n- Open an issue in the [Rancher](https://github.com/rancher/rancher/issues/new/choose) repository.\n- Verify with our [support matrix](https://www.suse.com/suse-rancher/support-matrix/all-supported-versions/) and [product support lifecycle](https://www.suse.com/lifecycle/).",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/rancher/rancher"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.6.0"
      }, {
        "fixed" : "2.6.13"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/rancher/rancher"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.7.0"
      }, {
        "fixed" : "2.7.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/rancher/rancher/security/advisories/GHSA-p976-h52c-26p6"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-22647"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.suse.com/show_bug.cgi?id=CVE-2023-22647"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/rancher/rancher"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rancher/rancher/releases/tag/v2.6.13"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rancher/rancher/releases/tag/v2.7.4"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-267", "CWE-269" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-06-06T02:00:28Z",
    "nvd_published_at" : "2023-06-01T13:15:10Z"
  }
}