Vulnerability-Lookup

GHSA-FPQ5-4VWM-78X4

Vulnerability from github – Published: 2023-11-17 21:51 – Updated: 2023-11-20 22:06

Summary

LibreNMS has Broken Access control on Graphs Feature

Details

Summary

This vulnerability occurs when application is not checking access of each type of users as per their role and it autorizing the users to access any feature. When user access his Device dashboard in librenms, one request is going to graph.php to access image of graphs generated on the particular Device. This request can be accessed by lower privileged users as well and they can enumerate devices on librenms with their id or hostname.

Details

Give all details on the vulnerability. Pointing to the incriminated source code is very helpful for the maintainer.

PoC

Login with Lower privilege user
Go to /graph.php?width=150&height=45&device=1&type=device_ping_perf&from=1699022192&legend=no&bg=FFFFFF00&popup_title=ICMP+Response
If its showing image with "device*ping_perf" which confirms that there is device with id 1
Now you can change device parameter in above URL with hostname to check if that Hostname/IP exist or not like http://127.0.0.1:8000/graph.php?width=150&height=45&device=127.0.0.1&type=device_ping_perf&from=1699022192&legend=no&bg=FFFFFF00&popup_title=ICMP+Response
If device hostname doesn't exist then it should show 500 error

Check attached screenshots for more info

Vulnerable code: https://github.com/librenms/librenms/blob/fa93034edd40c130c2ff00667ca2498d84be6e69/html/graph.php#L19C1-L25C2

Above is vulnerable line of code from Line number 19-25 This is not checking privilege of users to access any device hostname, its just checking if user is authenticated or not

Impact

Low privilege users can see all devices registered by admin users by using this method

Solution

Implement privilege access control feature to check if low privilege user have access or not.

Screenshots:-

Screenshot 2023-11-04 at 8 31 15 PM

Severity

4.3 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "librenms/librenms"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "23.11.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-48294"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-200"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-11-17T21:51:57Z",
    "nvd_published_at": "2023-11-17T22:15:08Z",
    "severity": "MODERATE"
  },
  "details": "### Summary\nThis vulnerability occurs when application is not checking access of each type of users as per their role and it autorizing the users to access any feature. When user access his Device dashboard in librenms, one request is going to graph.php to access image of graphs generated on the particular Device. This request can be accessed by lower privileged users as well and they can enumerate devices on librenms with their id or hostname.\n\n### Details\n_Give all details on the vulnerability. Pointing to the incriminated source code is very helpful for the maintainer._\n\n### PoC\n1. Login with Lower privilege user\n2. Go to /graph.php?width=150\u0026height=45\u0026device=1\u0026type=device_ping_perf\u0026from=1699022192\u0026legend=no\u0026bg=FFFFFF00\u0026popup_title=ICMP+Response\n3. If its showing image with \"device*ping_perf\" which confirms that there is device with id 1\n4. Now you can change device parameter in above URL with hostname to check if that Hostname/IP exist or not like\nhttp://127.0.0.1:8000/graph.php?width=150\u0026height=45\u0026device=127.0.0.1\u0026type=device_ping_perf\u0026from=1699022192\u0026legend=no\u0026bg=FFFFFF00\u0026popup_title=ICMP+Response\n\n5. If device hostname doesn\u0027t exist then it should show 500 error\n\nCheck attached screenshots for more info\n\nVulnerable code:\nhttps://github.com/librenms/librenms/blob/fa93034edd40c130c2ff00667ca2498d84be6e69/html/graph.php#L19C1-L25C2\n\nAbove is vulnerable line of code from Line number 19-25\nThis is not checking privilege of users to access any device hostname, its just checking if user is authenticated \nor not\n\n\n### Impact\nLow privilege users can see all devices registered by admin users by using this method\n\n### Solution\nImplement privilege access control feature to check if low privilege user have access or not.\n\n### Screenshots:-\n\u003cimg width=\"967\" alt=\"Screenshot 2023-11-04 at 8 31 15\u202fPM\" src=\"https://user-images.githubusercontent.com/31764504/281085588-1c5d81b9-83d7-4ba8-baf3-03c95a99cefe.png\"\u003e\n\u003cimg width=\"973\" alt=\"Screenshot 2023-11-04 at 8 31 36\u202fPM\" src=\"https://user-images.githubusercontent.com/31764504/281085614-7a4d13b0-d316-4d24-bdd2-05c3a80ffd59.png\"\u003e\n\u003cimg width=\"955\" alt=\"Screenshot 2023-11-04 at 8 31 48\u202fPM\" src=\"https://user-images.githubusercontent.com/31764504/281085629-43aa2b6f-7b18-415f-8001-519bda45f918.png\"\u003e\n\n",
  "id": "GHSA-fpq5-4vwm-78x4",
  "modified": "2023-11-20T22:06:40Z",
  "published": "2023-11-17T21:51:57Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/librenms/librenms/security/advisories/GHSA-fpq5-4vwm-78x4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-48294"
    },
    {
      "type": "WEB",
      "url": "https://github.com/librenms/librenms/commit/489978a923ed52aa243d3419889ca298a8a6a7cf"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/librenms/librenms"
    },
    {
      "type": "WEB",
      "url": "https://github.com/librenms/librenms/blob/fa93034edd40c130c2ff00667ca2498d84be6e69/html/graph.php#L19C1-L25C2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "LibreNMS has Broken Access control on Graphs Feature"
}

CVE-2023-48294 (GCVE-0-2023-48294)

Vulnerability from cvelistv5 – Published: 2023-11-17 21:12 – Updated: 2024-08-02 21:23

Title

Broken Access control on Graphs Feature in LibreNMS

Summary

LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring which includes support for a wide range of network hardware and operating systems. In affected versions of LibreNMS when a user accesses their device dashboard, one request is sent to `graph.php` to access graphs generated on the particular Device. This request can be accessed by a low privilege user and they can enumerate devices on librenms with their id or hostname. Leveraging this vulnerability a low privilege user can see all devices registered by admin users. This vulnerability has been addressed in commit `489978a923` which has been included in release version 23.11.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Severity

4.3 (Medium)


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

CWE

CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor

Assigner

GitHub_M

References

3 references

URL	Tags
https://github.com/librenms/librenms/security/adv…	x_refsource_CONFIRM
https://github.com/librenms/librenms/commit/48997…	x_refsource_MISC
https://github.com/librenms/librenms/blob/fa93034…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
librenms	librenms	Affected: < 23.11.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T21:23:39.485Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://github.com/librenms/librenms/security/advisories/GHSA-fpq5-4vwm-78x4",
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/librenms/librenms/security/advisories/GHSA-fpq5-4vwm-78x4"
          },
          {
            "name": "https://github.com/librenms/librenms/commit/489978a923ed52aa243d3419889ca298a8a6a7cf",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/librenms/librenms/commit/489978a923ed52aa243d3419889ca298a8a6a7cf"
          },
          {
            "name": "https://github.com/librenms/librenms/blob/fa93034edd40c130c2ff00667ca2498d84be6e69/html/graph.php#L19C1-L25C2",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/librenms/librenms/blob/fa93034edd40c130c2ff00667ca2498d84be6e69/html/graph.php#L19C1-L25C2"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "librenms",
          "vendor": "librenms",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 23.11.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring which includes support for a wide range of network hardware and operating systems. In affected versions of LibreNMS when a user accesses their device dashboard, one request is sent to `graph.php` to access graphs generated on the particular Device. This request can be accessed by a low privilege user and they can enumerate devices on librenms with their id or hostname. Leveraging this vulnerability a low privilege user can see all devices registered by admin users. This vulnerability has been addressed in commit `489978a923` which has been included in release version 23.11.0. Users are advised to upgrade. There are no known workarounds for this vulnerability."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-200",
              "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-11-17T21:12:59.642Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/librenms/librenms/security/advisories/GHSA-fpq5-4vwm-78x4",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/librenms/librenms/security/advisories/GHSA-fpq5-4vwm-78x4"
        },
        {
          "name": "https://github.com/librenms/librenms/commit/489978a923ed52aa243d3419889ca298a8a6a7cf",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/librenms/librenms/commit/489978a923ed52aa243d3419889ca298a8a6a7cf"
        },
        {
          "name": "https://github.com/librenms/librenms/blob/fa93034edd40c130c2ff00667ca2498d84be6e69/html/graph.php#L19C1-L25C2",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/librenms/librenms/blob/fa93034edd40c130c2ff00667ca2498d84be6e69/html/graph.php#L19C1-L25C2"
        }
      ],
      "source": {
        "advisory": "GHSA-fpq5-4vwm-78x4",
        "discovery": "UNKNOWN"
      },
      "title": "Broken Access control on Graphs Feature in LibreNMS"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2023-48294",
    "datePublished": "2023-11-17T21:12:59.642Z",
    "dateReserved": "2023-11-14T17:41:15.570Z",
    "dateUpdated": "2024-08-02T21:23:39.485Z",
    "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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-FPQ5-4VWM-78X4

Summary

Details

PoC

Impact

Solution

Screenshots:-

CVE-2023-48294 (GCVE-0-2023-48294)

Tags

Sightings

Nomenclature