Vulnerability-Lookup

GHSA-F8V5-JMFH-PR69

Vulnerability from github – Published: 2024-05-15 17:15 – Updated: 2024-05-15 19:35

Summary

Grav Vulnerable to Arbitrary File Read to Account Takeover

Details

Summary

A low privilege user account with page edit privilege can read any server files using Twig Syntax. This includes Grav user account files - /grav/user/accounts/*.yaml. This file stores hashed user password, 2FA secret, and the password reset token. This can allow an adversary to compromise any registered account by resetting a password for a user to get access to the password reset token from the file or by cracking the hashed password.

Proof Of Concept

{{ read_file('/var/www/html/grav/user/accounts/riri.yaml') }}

Use the above Twig template syntax in a page and observe that the administrator riri's authentication details are exposed accessible by any unauthenticated user.

file-read-2-ATO

As an additional proof of concept for reading system files, observe the /etc/passwd file read using the following Twig syntax: {{ read_file('/etc/passwd') }}

file-read-etc-passwd

Impact

This can allow a low privileged user to perform a full account takeover of other registered users including Adminsitrators. This can also allow an adversary to read any file in the web server.

Severity

8.5 (High)


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

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "getgrav/grav"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.7.46"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-34082"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22",
      "CWE-269"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-05-15T17:15:51Z",
    "nvd_published_at": "2024-05-15T17:15:12Z",
    "severity": "HIGH"
  },
  "details": "### Summary\nA low privilege user account with page edit privilege can read any server files using Twig Syntax. This includes Grav user account files - /grav/user/accounts/*.yaml. This file stores hashed user password, 2FA secret, and the password reset token. This can allow an adversary to compromise any registered account by resetting a password for a user to get access to the password reset token from the file or by cracking the hashed password.\n\n### Proof Of Concept\n`{{ read_file(\u0027/var/www/html/grav/user/accounts/riri.yaml\u0027) }}`\n\nUse the above Twig template syntax in a page and observe that the administrator riri\u0027s authentication details are exposed accessible by any unauthenticated user. \n\n![file-read-2-ATO](https://github.com/getgrav/grav/assets/48800246/9dee4daa-f029-40dd-9646-94c794d3f254)\n\nAs an additional proof of concept for reading system files, observe the `/etc/passwd` file read using the following Twig syntax:\n`{{ read_file(\u0027/etc/passwd\u0027) }}`\n\n![file-read-etc-passwd](https://github.com/getgrav/grav/assets/48800246/e45de4d4-f81f-42cf-8466-aa36b225ca94)\n\n### Impact\nThis can allow a low privileged user to perform a full account takeover of other registered users including Adminsitrators. This can also allow an adversary to read any file in the web server.",
  "id": "GHSA-f8v5-jmfh-pr69",
  "modified": "2024-05-15T19:35:22Z",
  "published": "2024-05-15T17:15:51Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/getgrav/grav/security/advisories/GHSA-f8v5-jmfh-pr69"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-34082"
    },
    {
      "type": "WEB",
      "url": "https://github.com/getgrav/grav/commit/b6bba9eb99bf8cb55b8fa8d23f18873ca594e348"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/getgrav/grav"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Grav Vulnerable to Arbitrary File Read to Account Takeover"
}

CVE-2024-34082 (GCVE-0-2024-34082)

Vulnerability from cvelistv5 – Published: 2024-05-15 16:42 – Updated: 2024-08-02 02:42

Title

Grav Arbitrary File Read to Account Takeover

Summary

Grav is a file-based Web platform. Prior to version 1.7.46, a low privilege user account with page edit privilege can read any server files using Twig Syntax. This includes Grav user account files - `/grav/user/accounts/*.yaml`. This file stores hashed user password, 2FA secret, and the password reset token. This can allow an adversary to compromise any registered account and read any file in the web server by resetting a password for a user to get access to the password reset token from the file or by cracking the hashed password. A low privileged user may also perform a full account takeover of other registered users including Administrators. Version 1.7.46 contains a patch.

Severity

8.5 (High)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-05-15 19:34 UTC

CWE

CWE-269 - Improper Privilege Management

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/getgrav/grav/security/advisori…	x_refsource_CONFIRM
https://github.com/getgrav/grav/commit/b6bba9eb99…	x_refsource_MISC

Impacted products

2 products

Vendor	Product	Version
getgrav	grav	Affected: < 1.7.46
getgrav	grav	Affected: * cpe:2.3:a:getgrav:grav::::::::

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "grav",
            "vendor": "getgrav",
            "versions": [
              {
                "status": "affected",
                "version": "*"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-34082",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-05-15T19:34:23.433554Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-04T17:41:51.067Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T02:42:59.940Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://github.com/getgrav/grav/security/advisories/GHSA-f8v5-jmfh-pr69",
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/getgrav/grav/security/advisories/GHSA-f8v5-jmfh-pr69"
          },
          {
            "name": "https://github.com/getgrav/grav/commit/b6bba9eb99bf8cb55b8fa8d23f18873ca594e348",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/getgrav/grav/commit/b6bba9eb99bf8cb55b8fa8d23f18873ca594e348"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "grav",
          "vendor": "getgrav",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.7.46"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Grav is a file-based Web platform. Prior to version 1.7.46, a low privilege user account with page edit privilege can read any server files using Twig Syntax. This includes Grav user account files - `/grav/user/accounts/*.yaml`. This file stores hashed user password, 2FA secret, and the password reset token. This can allow an adversary to compromise any registered account and read any file in the web server by resetting a password for a user to get access to the password reset token from the file or by cracking the hashed password. A low privileged user may also perform a full account takeover of other registered users including Administrators. Version 1.7.46 contains a patch."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 8.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-269",
              "description": "CWE-269: Improper Privilege Management",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-05-15T16:42:19.075Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/getgrav/grav/security/advisories/GHSA-f8v5-jmfh-pr69",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/getgrav/grav/security/advisories/GHSA-f8v5-jmfh-pr69"
        },
        {
          "name": "https://github.com/getgrav/grav/commit/b6bba9eb99bf8cb55b8fa8d23f18873ca594e348",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/getgrav/grav/commit/b6bba9eb99bf8cb55b8fa8d23f18873ca594e348"
        }
      ],
      "source": {
        "advisory": "GHSA-f8v5-jmfh-pr69",
        "discovery": "UNKNOWN"
      },
      "title": "Grav Arbitrary File Read to Account Takeover"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2024-34082",
    "datePublished": "2024-05-15T16:42:19.075Z",
    "dateReserved": "2024-04-30T06:56:33.384Z",
    "dateUpdated": "2024-08-02T02:42:59.940Z",
    "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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

GHSA-F8V5-JMFH-PR69

Summary

Proof Of Concept

Impact

CVE-2024-34082 (GCVE-0-2024-34082)

Tags

Sightings

Nomenclature

Related by attack behaviour