CVE-2023-1718 (GCVE-0-2023-1718)

Vulnerability from cvelistv5 – Published: 2023-11-01 09:04 – Updated: 2024-09-05 19:44
VLAI
Title
Bitrix24 Denial-of-Service (DoS) via Improper File Stream Access
Summary
Improper file stream access in /desktop_app/file.ajax.php?action=uploadfile in Bitrix24 22.0.300 allows unauthenticated remote attackers to cause denial-of-service via a crafted "tmp_url".
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-05 19:44 UTC
CWE
  • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
STAR_Labs CNA under the mitre root
CNA scorecard – unranked: 1 record in the last 180 days, 10 needed details
References
URL Tags
https://starlabs.sg/advisories/23/23-1718/ third-party-advisory
Impacted products
Vendor Product Version CPE status
Bitrix24 Bitrix24 Affected: 0 , ≤ 22.0.300 (custom)
guessed Create a notification for this product.
Credits
Lam Jun Rong & Li Jiantao of STAR Labs SG Pte. Ltd. (@starlabs_sg)
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T05:57:24.957Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "third-party-advisory",
              "x_transferred"
            ],
            "url": "https://starlabs.sg/advisories/23/23-1718/"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-1718",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-05T19:44:09.574274Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-05T19:44:21.617Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Bitrix24",
          "programFiles": [
            "file:desktop_app/file.ajax.php"
          ],
          "vendor": "Bitrix24",
          "versions": [
            {
              "lessThanOrEqual": "22.0.300",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "user": "00000000-0000-4000-9000-000000000000",
          "value": "Lam Jun Rong \u0026 Li Jiantao of STAR Labs SG Pte. Ltd. (@starlabs_sg)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\n\n\u003cdiv\u003e\u003cdiv\u003eImproper file stream access in /desktop_app/file.ajax.php?action=uploadfile in Bitrix24 22.0.300 allows unauthenticated remote attackers to cause denial-of-service via a crafted \"tmp_url\".\u003c/div\u003e\u003c/div\u003e\n\n"
            }
          ],
          "value": "\nImproper file stream access in /desktop_app/file.ajax.php?action=uploadfile in Bitrix24 22.0.300 allows unauthenticated remote attackers to cause denial-of-service via a crafted \"tmp_url\".\n\n\n\n\n\n"
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-545",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-545 Pull Data from System Resources"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-835",
              "description": "CWE-835 Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-11-01T09:04:03.276Z",
        "orgId": "b1571b85-cbc9-431f-830b-0c8155323a69",
        "shortName": "STAR_Labs"
      },
      "references": [
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://starlabs.sg/advisories/23/23-1718/"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Bitrix24 Denial-of-Service (DoS) via Improper File Stream Access",
      "x_generator": {
        "engine": "Vulnogram 0.1.0-dev"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b1571b85-cbc9-431f-830b-0c8155323a69",
    "assignerShortName": "STAR_Labs",
    "cveId": "CVE-2023-1718",
    "datePublished": "2023-11-01T09:04:03.276Z",
    "dateReserved": "2023-03-30T09:17:34.502Z",
    "dateUpdated": "2024-09-05T19:44:21.617Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2023-1718",
      "date": "2026-10-20",
      "epss": "0.24078",
      "percentile": "0.97833"
    },
    "fkie_nvd": {
      "configurations": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:bitrix24:bitrix24:22.0.300:*:*:*:*:*:*:*",
                  "matchCriteriaId": "D47D6185-F86F-4402-85C1-C0A0EAE09B0D",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "\nImproper file stream access in /desktop_app/file.ajax.php?action=uploadfile in Bitrix24 22.0.300 allows unauthenticated remote attackers to cause denial-of-service via a crafted \"tmp_url\".\n\n\n\n\n\n"
        },
        {
          "lang": "es",
          "value": "El acceso inadecuado a la secuencia de archivos en /desktop_app/file.ajax.php?action=uploadfile en Bitrix24 22.0.300 permite a atacantes remotos no autenticados provocar denegaci\u00f3n de servicio a trav\u00e9s de un \"tmp_url\" manipulado."
        }
      ],
      "id": "CVE-2023-1718",
      "lastModified": "2024-11-21T07:39:45.687",
      "metrics": {
        "cvssMetricV31": [
          {
            "cvssData": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            },
            "exploitabilityScore": 3.9,
            "impactScore": 3.6,
            "source": "info@starlabs.sg",
            "type": "Secondary"
          },
          {
            "cvssData": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            },
            "exploitabilityScore": 3.9,
            "impactScore": 3.6,
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      },
      "published": "2023-11-01T10:15:09.307",
      "references": [
        {
          "source": "info@starlabs.sg",
          "tags": [
            "Exploit",
            "Third Party Advisory"
          ],
          "url": "https://starlabs.sg/advisories/23/23-1718/"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Exploit",
            "Third Party Advisory"
          ],
          "url": "https://starlabs.sg/advisories/23/23-1718/"
        }
      ],
      "sourceIdentifier": "info@starlabs.sg",
      "vulnStatus": "Modified",
      "weaknesses": [
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-835"
            }
          ],
          "source": "info@starlabs.sg",
          "type": "Secondary"
        },
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-835"
            }
          ],
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Bitrix24",
                "programFiles": [
                  "file:desktop_app/file.ajax.php"
                ],
                "vendor": "Bitrix24",
                "versions": [
                  {
                    "lessThanOrEqual": "22.0.300",
                    "status": "affected",
                    "version": "0",
                    "versionType": "custom"
                  }
                ]
              }
            ],
            "source": "info@starlabs.sg"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:bitrix24:bitrix24:22.0.300:*:*:*:*:*:*:*",
                    "matchCriteriaId": "D47D6185-F86F-4402-85C1-C0A0EAE09B0D",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "\nImproper file stream access in /desktop_app/file.ajax.php?action=uploadfile in Bitrix24 22.0.300 allows unauthenticated remote attackers to cause denial-of-service via a crafted \"tmp_url\".\n\n\n\n\n\n"
          },
          {
            "lang": "es",
            "value": "El acceso inadecuado a la secuencia de archivos en /desktop_app/file.ajax.php?action=uploadfile en Bitrix24 22.0.300 permite a atacantes remotos no autenticados provocar denegaci\u00f3n de servicio a trav\u00e9s de un \"tmp_url\" manipulado."
          }
        ],
        "id": "CVE-2023-1718",
        "lastModified": "2026-06-17T05:28:36.517",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "info@starlabs.sg",
              "type": "Secondary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2023-1718",
                "options": [
                  {
                    "exploitation": "poc"
                  },
                  {
                    "automatable": "yes"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-05T19:44:09.574274Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2023-11-01T10:15:09.307",
        "references": [
          {
            "source": "info@starlabs.sg",
            "tags": [
              "Exploit",
              "Third Party Advisory"
            ],
            "url": "https://starlabs.sg/advisories/23/23-1718/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Exploit",
              "Third Party Advisory"
            ],
            "url": "https://starlabs.sg/advisories/23/23-1718/"
          }
        ],
        "sourceIdentifier": "info@starlabs.sg",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-835"
              }
            ],
            "source": "info@starlabs.sg",
            "type": "Secondary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-835"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2025-05-28T23:49:39+00:00",
      "cve": "CVE-2023-1718",
      "id": "CVE-2023-1718",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "Bitrix24 Denial-of-Service (DoS) via Improper File Stream Access",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-1718.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2024-08-02T05:57:24.957Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "tags": [
                  "third-party-advisory",
                  "x_transferred"
                ],
                "url": "https://starlabs.sg/advisories/23/23-1718/"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2023-1718",
                    "options": [
                      {
                        "Exploitation": "poc"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2024-09-05T19:44:09.574274Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2024-09-05T19:44:16.427Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Bitrix24",
              "programFiles": [
                "file:desktop_app/file.ajax.php"
              ],
              "vendor": "Bitrix24",
              "versions": [
                {
                  "lessThanOrEqual": "22.0.300",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            }
          ],
          "credits": [
            {
              "lang": "en",
              "type": "finder",
              "user": "00000000-0000-4000-9000-000000000000",
              "value": "Lam Jun Rong \u0026 Li Jiantao of STAR Labs SG Pte. Ltd. (@starlabs_sg)"
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "\n\n\u003cdiv\u003e\u003cdiv\u003eImproper file stream access in /desktop_app/file.ajax.php?action=uploadfile in Bitrix24 22.0.300 allows unauthenticated remote attackers to cause denial-of-service via a crafted \"tmp_url\".\u003c/div\u003e\u003c/div\u003e\n\n"
                }
              ],
              "value": "\nImproper file stream access in /desktop_app/file.ajax.php?action=uploadfile in Bitrix24 22.0.300 allows unauthenticated remote attackers to cause denial-of-service via a crafted \"tmp_url\".\n\n\n\n\n\n"
            }
          ],
          "impacts": [
            {
              "capecId": "CAPEC-545",
              "descriptions": [
                {
                  "lang": "en",
                  "value": "CAPEC-545 Pull Data from System Resources"
                }
              ]
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-835",
                  "description": "CWE-835 Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2023-11-01T09:04:03.276Z",
            "orgId": "b1571b85-cbc9-431f-830b-0c8155323a69",
            "shortName": "STAR_Labs"
          },
          "references": [
            {
              "tags": [
                "third-party-advisory"
              ],
              "url": "https://starlabs.sg/advisories/23/23-1718/"
            }
          ],
          "source": {
            "discovery": "UNKNOWN"
          },
          "title": "Bitrix24 Denial-of-Service (DoS) via Improper File Stream Access",
          "x_generator": {
            "engine": "Vulnogram 0.1.0-dev"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "b1571b85-cbc9-431f-830b-0c8155323a69",
        "assignerShortName": "STAR_Labs",
        "cveId": "CVE-2023-1718",
        "datePublished": "2023-11-01T09:04:03.276Z",
        "dateReserved": "2023-03-30T09:17:34.502Z",
        "dateUpdated": "2024-09-05T19:44:21.617Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    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.