Vulnerability-Lookup

GHSA-97W9-GCC7-VR8G

Vulnerability from github – Published: 2022-11-16 12:00 – Updated: 2023-07-19 19:58

Summary

Insufficient Entropy in PHPServerMon PRNG

Details

A vulnerability, which was classified as problematic, was found in phpservermon. This affects the function generatePasswordResetToken of the file src/psm/Service/User.php. The manipulation leads to use of predictable algorithm in random number generator. The exploit has been disclosed to the public and may be used. The name of the patch is 3daa804d5f56c55b3ae13bfac368bb84ec632193. It is recommended to apply a patch to fix this issue. The identifier VDB-213717 was assigned to this vulnerability.

Severity

5.3 (Medium)


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

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "phpservermon/phpservermon"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.6.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-4240"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1241",
      "CWE-330",
      "CWE-331"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-07-07T19:27:56Z",
    "nvd_published_at": "2022-11-15T23:15:00Z",
    "severity": "MODERATE"
  },
  "details": "A vulnerability, which was classified as problematic, was found in phpservermon. This affects the function `generatePasswordResetToken` of the file `src/psm/Service/User.php`. The manipulation leads to use of predictable algorithm in random number generator. The exploit has been disclosed to the public and may be used. The name of the patch is 3daa804d5f56c55b3ae13bfac368bb84ec632193. It is recommended to apply a patch to fix this issue. The identifier VDB-213717 was assigned to this vulnerability.",
  "id": "GHSA-97w9-gcc7-vr8g",
  "modified": "2023-07-19T19:58:50Z",
  "published": "2022-11-16T12:00:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-4240"
    },
    {
      "type": "WEB",
      "url": "https://github.com/phpservermon/phpservermon/commit/3daa804d5f56c55b3ae13bfac368bb84ec632193"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/phpservermon/phpservermon"
    },
    {
      "type": "WEB",
      "url": "https://huntr.dev/bounties/2-phpservermon/phpservermon"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?id.213717"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Insufficient Entropy in PHPServerMon PRNG"
}

CVE-2021-4240 (GCVE-0-2021-4240)

Vulnerability from cvelistv5 – Published: 2022-11-15 00:00 – Updated: 2025-04-15 13:14

Title

phpservermon User.php generatePasswordResetToken predictable algorithm in random number generator

Summary

A vulnerability, which was classified as problematic, was found in phpservermon. This affects the function generatePasswordResetToken of the file src/psm/Service/User.php. The manipulation leads to use of predictable algorithm in random number generator. The exploit has been disclosed to the public and may be used. The name of the patch is 3daa804d5f56c55b3ae13bfac368bb84ec632193. It is recommended to apply a patch to fix this issue. The identifier VDB-213717 was assigned to this vulnerability.

Severity

2.6 (Low)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-14 16:57 UTC

CWE

CWE-331 - Insufficient Entropy -> CWE-338 Cryptographically Weak PRNG -> CWE-1241 Use of Predictable Algorithm in Random Number Generator

Assigner

VulDB mitre root Scorecard

References

3 references

URL	Tags
https://huntr.dev/bounties/2-phpservermon/phpservermon/
https://github.com/phpservermon/phpservermon/comm…
https://vuldb.com/?id.213717

Impacted products

1 product

Vendor	Product	Version
unspecified	phpservermon	Affected: n/a

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:23:09.084Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://huntr.dev/bounties/2-phpservermon/phpservermon/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/phpservermon/phpservermon/commit/3daa804d5f56c55b3ae13bfac368bb84ec632193"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://vuldb.com/?id.213717"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-4240",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-14T16:57:36.575882Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-15T13:14:03.973Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "phpservermon",
          "vendor": "unspecified",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability, which was classified as problematic, was found in phpservermon. This affects the function generatePasswordResetToken of the file src/psm/Service/User.php. The manipulation leads to use of predictable algorithm in random number generator. The exploit has been disclosed to the public and may be used. The name of the patch is 3daa804d5f56c55b3ae13bfac368bb84ec632193. It is recommended to apply a patch to fix this issue. The identifier VDB-213717 was assigned to this vulnerability."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 2.6,
            "baseSeverity": "LOW",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-331",
              "description": "CWE-331 Insufficient Entropy -\u003e CWE-338 Cryptographically Weak PRNG -\u003e CWE-1241 Use of Predictable Algorithm in Random Number Generator",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-11-15T00:00:00.000Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "url": "https://huntr.dev/bounties/2-phpservermon/phpservermon/"
        },
        {
          "url": "https://github.com/phpservermon/phpservermon/commit/3daa804d5f56c55b3ae13bfac368bb84ec632193"
        },
        {
          "url": "https://vuldb.com/?id.213717"
        }
      ],
      "title": "phpservermon User.php generatePasswordResetToken predictable algorithm in random number generator",
      "x_generator": "vuldb.com"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2021-4240",
    "datePublished": "2022-11-15T00:00:00.000Z",
    "dateReserved": "2022-11-15T00:00:00.000Z",
    "dateUpdated": "2025-04-15T13:14:03.973Z",
    "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.

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Action not permitted

GHSA-97W9-GCC7-VR8G

CVE-2021-4240 (GCVE-0-2021-4240)

Tags

Sightings

Nomenclature

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