Vulnerability-Lookup

GHSA-F7QW-JJ9C-RPQ9

Vulnerability from github – Published: 2023-05-31 23:38 – Updated: 2023-05-31 23:38

Summary

In Lima, a malicious disk image could read a single file on the host filesystem as a qcow2/vmdk backing file

Details

Note

The official templates of Lima, and the well-known third party products (Colima, Rancher Desktop, and Finch) are unlikely to be affected by this issue.

Impact

A virtual machine instance with a malicious disk image could read a single file on the host filesystem, even when no filesystem is mounted from the host.

To exploit this issue, the attacker has to embed the target file path (an absolute or a relative path from the instance directory) in a malicious disk image, as the qcow2 (or vmdk) backing file path string. As Lima refuses to run as the root, it is practically impossible for the attacker to read the entire host disk via /dev/rdiskN. Also, practically, the attacker cannot read at least the first 512 bytes (MBR) of the target file.

Patches

Patched in Lima v0.16.0, by prohibiting using a backing file path in the VM base image.

Workarounds

Do not use an untrusted disk image.

Severity

2.7 (Low)


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

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JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/lima-vm/lima"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.16.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-32684"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-552"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-05-31T23:38:28Z",
    "nvd_published_at": "2023-05-30T18:15:10Z",
    "severity": "LOW"
  },
  "details": "\u003e **Note**\n\u003e\n\u003e The official templates of Lima, and the well-known third party products (Colima, Rancher Desktop, and Finch) are *unlikely* to be affected by this issue.\n\n### Impact\nA virtual machine instance with a malicious disk image could read a single file on the host filesystem, even when no filesystem is mounted from the host.\n\nTo exploit this issue, the attacker has to embed the target file path (an absolute or a relative path from the instance directory) in a malicious disk image, as the [qcow2 (or vmdk) backing file path string](https://gitlab.com/qemu-project/qemu/-/blob/v8.0.0/docs/interop/qcow2.txt#L23-L34).\nAs Lima refuses to run as the root, it is practically impossible for the attacker to read the entire host disk via `/dev/rdiskN`.\nAlso, practically, the attacker cannot read at least the first 512 bytes (MBR) of the target file.\n\n### Patches\nPatched in Lima v0.16.0, by prohibiting using a backing file path in the VM base image.\n\n### Workarounds\nDo not use an untrusted disk image.",
  "id": "GHSA-f7qw-jj9c-rpq9",
  "modified": "2023-05-31T23:38:28Z",
  "published": "2023-05-31T23:38:28Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/lima-vm/lima/security/advisories/GHSA-f7qw-jj9c-rpq9"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-32684"
    },
    {
      "type": "WEB",
      "url": "https://github.com/lima-vm/lima/commit/01dbd4d9cabe692afa4517be3995771f0ebb38a5"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/lima-vm/lima"
    },
    {
      "type": "WEB",
      "url": "https://github.com/lima-vm/lima/releases/tag/v0.16.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "In Lima, a malicious disk image could read a single file on the host filesystem as a qcow2/vmdk backing file"
}

CVE-2023-32684 (GCVE-0-2023-32684)

Vulnerability from cvelistv5 – Published: 2023-05-30 17:19 – Updated: 2025-01-10 16:52

Title

In Lima, a malicious disk image could read a single file on the host filesystem as a qcow2/vmdk backing file

Summary

Lima launches Linux virtual machines, typically on macOS, for running containerd. Prior to version 0.16.0, a virtual machine instance with a malicious disk image could read a single file on the host filesystem, even when no filesystem is mounted from the host. The official templates of Lima and the well-known third party products (Colima, Rancher Desktop, and Finch) are unlikely to be affected by this issue. To exploit this issue, the attacker has to embed the target file path (an absolute or a relative path from the instance directory) in a malicious disk image, as the qcow2 (or vmdk) backing file path string. As Lima refuses to run as the root, it is practically impossible for the attacker to read the entire host disk via `/dev/rdiskN`. Also, practically, the attacker cannot read at least the first 512 bytes (MBR) of the target file. The issue has been patched in Lima in version 0.16.0 by prohibiting using a backing file path in the VM base image.

Severity

2.7 (Low)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-01-10 16:52 UTC

CWE

CWE-552 - Files or Directories Accessible to External Parties

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7626 records in the last 180 days details

References

3 references

URL	Tags
https://github.com/lima-vm/lima/security/advisori…	x_refsource_CONFIRM
https://github.com/lima-vm/lima/commit/01dbd4d9ca…	x_refsource_MISC
https://github.com/lima-vm/lima/releases/tag/v0.16.0	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
lima-vm	lima	Affected: < 0.16.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T15:25:36.454Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://github.com/lima-vm/lima/security/advisories/GHSA-f7qw-jj9c-rpq9",
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/lima-vm/lima/security/advisories/GHSA-f7qw-jj9c-rpq9"
          },
          {
            "name": "https://github.com/lima-vm/lima/commit/01dbd4d9cabe692afa4517be3995771f0ebb38a5",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/lima-vm/lima/commit/01dbd4d9cabe692afa4517be3995771f0ebb38a5"
          },
          {
            "name": "https://github.com/lima-vm/lima/releases/tag/v0.16.0",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/lima-vm/lima/releases/tag/v0.16.0"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-32684",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-01-10T16:52:00.469250Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-01-10T16:52:10.831Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "lima",
          "vendor": "lima-vm",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.16.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Lima launches Linux virtual machines, typically on macOS, for running containerd. Prior to version 0.16.0, a virtual machine instance with a malicious disk image could read a single file on the host filesystem, even when no filesystem is mounted from the host. The official templates of Lima and the well-known third party products (Colima, Rancher Desktop, and Finch) are unlikely to be affected by this issue. To exploit this issue, the attacker has to embed the target file path (an absolute or a relative path from the instance directory) in a malicious disk image, as the qcow2 (or vmdk) backing file path string. As Lima refuses to run as the root, it is practically impossible for the attacker to read the entire host disk via `/dev/rdiskN`. Also, practically, the attacker cannot read at least the first 512 bytes (MBR) of the target file. The issue has been patched in Lima in version 0.16.0 by prohibiting using a backing file path in the VM base image."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 2.7,
            "baseSeverity": "LOW",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-552",
              "description": "CWE-552: Files or Directories Accessible to External Parties",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-05-30T17:19:17.148Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/lima-vm/lima/security/advisories/GHSA-f7qw-jj9c-rpq9",
          "tags": [
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          ],
          "url": "https://github.com/lima-vm/lima/security/advisories/GHSA-f7qw-jj9c-rpq9"
        },
        {
          "name": "https://github.com/lima-vm/lima/commit/01dbd4d9cabe692afa4517be3995771f0ebb38a5",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/lima-vm/lima/commit/01dbd4d9cabe692afa4517be3995771f0ebb38a5"
        },
        {
          "name": "https://github.com/lima-vm/lima/releases/tag/v0.16.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/lima-vm/lima/releases/tag/v0.16.0"
        }
      ],
      "source": {
        "advisory": "GHSA-f7qw-jj9c-rpq9",
        "discovery": "UNKNOWN"
      },
      "title": "In Lima, a malicious disk image could read a single file on the host filesystem as a qcow2/vmdk backing file"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2023-32684",
    "datePublished": "2023-05-30T17:19:17.148Z",
    "dateReserved": "2023-05-11T16:33:45.732Z",
    "dateUpdated": "2025-01-10T16:52:10.831Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

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