GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2021-31646 (GCVE-0-2021-31646)

Vulnerability from cvelistv5 – Published: 2021-04-26 18:07 – Updated: 2024-08-03 23:03
VLAI
Summary
Gestsup before 3.2.10 allows account takeover through the password recovery functionality (remote). The affected component is the file forgot_pwd.php - it uses a weak algorithm for the generation of password recovery tokens (the PHP uniqueid function), allowing a brute force attack.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • n/a
Assigner
References
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T23:03:33.628Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://gestsup.fr/index.php?page=download"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://dojo.maltem.ca/public/advisories/CVE-2021-31646.html"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://gestsup.fr/index.php?page=download\u0026channel=beta\u0026version=3.2.10\u0026type=patch"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Gestsup before 3.2.10 allows account takeover through the password recovery functionality (remote). The affected component is the file forgot_pwd.php - it uses a weak algorithm for the generation of password recovery tokens (the PHP uniqueid function), allowing a brute force attack."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-04-26T18:07:19.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://gestsup.fr/index.php?page=download"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://dojo.maltem.ca/public/advisories/CVE-2021-31646.html"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://gestsup.fr/index.php?page=download\u0026channel=beta\u0026version=3.2.10\u0026type=patch"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2021-31646",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Gestsup before 3.2.10 allows account takeover through the password recovery functionality (remote). The affected component is the file forgot_pwd.php - it uses a weak algorithm for the generation of password recovery tokens (the PHP uniqueid function), allowing a brute force attack."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://gestsup.fr/index.php?page=download",
              "refsource": "MISC",
              "url": "https://gestsup.fr/index.php?page=download"
            },
            {
              "name": "https://dojo.maltem.ca/public/advisories/CVE-2021-31646.html",
              "refsource": "MISC",
              "url": "https://dojo.maltem.ca/public/advisories/CVE-2021-31646.html"
            },
            {
              "name": "https://gestsup.fr/index.php?page=download\u0026channel=beta\u0026version=3.2.10\u0026type=patch",
              "refsource": "MISC",
              "url": "https://gestsup.fr/index.php?page=download\u0026channel=beta\u0026version=3.2.10\u0026type=patch"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2021-31646",
    "datePublished": "2021-04-26T18:07:19.000Z",
    "dateReserved": "2021-04-23T00:00:00.000Z",
    "dateUpdated": "2024-08-03T23:03:33.628Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-31646",
      "date": "2026-09-17",
      "epss": "0.01339",
      "percentile": "0.6991"
    },
    "fkie_nvd": {
      "configurations": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:gestsup:gestsup:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "CCC91FEE-0720-447A-9FE3-1EBF2B9D4249",
                  "versionEndExcluding": "3.2.10",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Gestsup before 3.2.10 allows account takeover through the password recovery functionality (remote). The affected component is the file forgot_pwd.php - it uses a weak algorithm for the generation of password recovery tokens (the PHP uniqueid function), allowing a brute force attack."
        },
        {
          "lang": "es",
          "value": "Gestsup versiones anteriores a 3.2.10, permite una toma de control de la cuenta por medio de la funcionalidad password recovery (remote).\u0026#xa0;El componente afectado es el archivo forgot_pwd.php, usa un algoritmo d\u00e9bil para la generaci\u00f3n de tokens de recuperaci\u00f3n de contrase\u00f1a (la funci\u00f3n PHP uniqueid), permitiendo un ataque de fuerza bruta"
        }
      ],
      "id": "CVE-2021-31646",
      "lastModified": "2024-11-21T06:06:04.423",
      "metrics": {
        "cvssMetricV2": [
          {
            "acInsufInfo": false,
            "baseSeverity": "HIGH",
            "cvssData": {
              "accessComplexity": "LOW",
              "accessVector": "NETWORK",
              "authentication": "NONE",
              "availabilityImpact": "PARTIAL",
              "baseScore": 7.5,
              "confidentialityImpact": "PARTIAL",
              "integrityImpact": "PARTIAL",
              "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
              "version": "2.0"
            },
            "exploitabilityScore": 10.0,
            "impactScore": 6.4,
            "obtainAllPrivilege": false,
            "obtainOtherPrivilege": false,
            "obtainUserPrivilege": false,
            "source": "nvd@nist.gov",
            "type": "Primary",
            "userInteractionRequired": false
          }
        ],
        "cvssMetricV31": [
          {
            "cvssData": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 9.8,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            },
            "exploitabilityScore": 3.9,
            "impactScore": 5.9,
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      },
      "published": "2021-04-26T19:15:08.550",
      "references": [
        {
          "source": "cve@mitre.org",
          "tags": [
            "Broken Link",
            "Third Party Advisory"
          ],
          "url": "https://dojo.maltem.ca/public/advisories/CVE-2021-31646.html"
        },
        {
          "source": "cve@mitre.org",
          "tags": [
            "Patch",
            "Vendor Advisory"
          ],
          "url": "https://gestsup.fr/index.php?page=download"
        },
        {
          "source": "cve@mitre.org",
          "tags": [
            "Patch",
            "Vendor Advisory"
          ],
          "url": "https://gestsup.fr/index.php?page=download\u0026channel=beta\u0026version=3.2.10\u0026type=patch"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Broken Link",
            "Third Party Advisory"
          ],
          "url": "https://dojo.maltem.ca/public/advisories/CVE-2021-31646.html"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Patch",
            "Vendor Advisory"
          ],
          "url": "https://gestsup.fr/index.php?page=download"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Patch",
            "Vendor Advisory"
          ],
          "url": "https://gestsup.fr/index.php?page=download\u0026channel=beta\u0026version=3.2.10\u0026type=patch"
        }
      ],
      "sourceIdentifier": "cve@mitre.org",
      "vulnStatus": "Modified",
      "weaknesses": [
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-307"
            }
          ],
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:gestsup:gestsup:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "CCC91FEE-0720-447A-9FE3-1EBF2B9D4249",
                    "versionEndExcluding": "3.2.10",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Gestsup before 3.2.10 allows account takeover through the password recovery functionality (remote). The affected component is the file forgot_pwd.php - it uses a weak algorithm for the generation of password recovery tokens (the PHP uniqueid function), allowing a brute force attack."
          },
          {
            "lang": "es",
            "value": "Gestsup versiones anteriores a 3.2.10, permite una toma de control de la cuenta por medio de la funcionalidad password recovery (remote).\u0026#xa0;El componente afectado es el archivo forgot_pwd.php, usa un algoritmo d\u00e9bil para la generaci\u00f3n de tokens de recuperaci\u00f3n de contrase\u00f1a (la funci\u00f3n PHP uniqueid), permitiendo un ataque de fuerza bruta"
          }
        ],
        "id": "CVE-2021-31646",
        "lastModified": "2024-11-21T06:06:04.423",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "HIGH",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 7.5,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
                "version": "2.0"
              },
              "exploitabilityScore": 10.0,
              "impactScore": 6.4,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 9.8,
                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2021-04-26T19:15:08.550",
        "references": [
          {
            "source": "cve@mitre.org",
            "tags": [
              "Broken Link",
              "Third Party Advisory"
            ],
            "url": "https://dojo.maltem.ca/public/advisories/CVE-2021-31646.html"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://gestsup.fr/index.php?page=download"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://gestsup.fr/index.php?page=download\u0026channel=beta\u0026version=3.2.10\u0026type=patch"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Broken Link",
              "Third Party Advisory"
            ],
            "url": "https://dojo.maltem.ca/public/advisories/CVE-2021-31646.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://gestsup.fr/index.php?page=download"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://gestsup.fr/index.php?page=download\u0026channel=beta\u0026version=3.2.10\u0026type=patch"
          }
        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-307"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2026-03-27T14:06:56+00:00",
      "cve": "CVE-2021-31646",
      "id": "CVE-2021-31646",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "CVE-2021-31646",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-31646.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


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.