CVE-2023-35721 (GCVE-0-2023-35721)

Vulnerability from cvelistv5 – Published: 2024-05-03 01:57 – Updated: 2024-08-02 16:30
VLAI
Title
NETGEAR Multiple Routers curl_post Improper Certificate Validation Remote Code Execution Vulnerability
Summary
NETGEAR Multiple Routers curl_post Improper Certificate Validation Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to compromise the integrity of downloaded information on affected installations of multiple NETGEAR routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the update functionality, which operates over HTTPS. The issue results from the lack of proper validation of the certificate presented by the server. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-19981.
Severity
8.1 (High)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-05 20:07 UTC
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
zdi CNA under the mitre root
CNA scorecard C 72/100 over 191 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
NETGEAR Multiple Routers Affected: 1.0.12.120_2.0.83
guessed Create a notification for this product.
netgear rax50_firmware Affected: 0 , < 1.1.15.128 (custom)
    cpe:2.3:a:netgear:rax50_firmware:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2023-06-30 18:54
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:netgear:rax50_firmware:*:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "rax50_firmware",
            "vendor": "netgear",
            "versions": [
              {
                "lessThan": "1.1.15.128",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-35721",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-06-05T20:07:02.975691Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-05T20:12:31.015Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T16:30:44.421Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "ZDI-23-893",
            "tags": [
              "x_research-advisory",
              "x_transferred"
            ],
            "url": "https://www.zerodayinitiative.com/advisories/ZDI-23-893/"
          },
          {
            "name": "vendor-provided URL",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://kb.netgear.com/000065668/Security-Advisory-for-Improper-Remote-Server-Certificate-Validation-on-the-RAX50-PSV-2023-0019"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "Multiple Routers",
          "vendor": "NETGEAR",
          "versions": [
            {
              "status": "affected",
              "version": "1.0.12.120_2.0.83"
            }
          ]
        }
      ],
      "dateAssigned": "2023-06-15T20:31:13.933Z",
      "datePublic": "2023-06-30T18:54:43.898Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "NETGEAR Multiple Routers curl_post Improper Certificate Validation Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to compromise the integrity of downloaded information on affected installations of multiple NETGEAR routers. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the update functionality, which operates over HTTPS. The issue results from the lack of proper validation of the certificate presented by the server. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-19981."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-295",
              "description": "CWE-295: Improper Certificate Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-05-03T01:57:40.905Z",
        "orgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
        "shortName": "zdi"
      },
      "references": [
        {
          "name": "ZDI-23-893",
          "tags": [
            "x_research-advisory"
          ],
          "url": "https://www.zerodayinitiative.com/advisories/ZDI-23-893/"
        },
        {
          "name": "vendor-provided URL",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://kb.netgear.com/000065668/Security-Advisory-for-Improper-Remote-Server-Certificate-Validation-on-the-RAX50-PSV-2023-0019"
        }
      ],
      "source": {
        "lang": "en",
        "value": "Zach Hanley (@hacks_zach) of Horizon3 A.I."
      },
      "title": "NETGEAR Multiple Routers curl_post Improper Certificate Validation Remote Code Execution Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
    "assignerShortName": "zdi",
    "cveId": "CVE-2023-35721",
    "datePublished": "2024-05-03T01:57:40.905Z",
    "dateReserved": "2023-06-15T20:23:02.753Z",
    "dateUpdated": "2024-08-02T16:30:44.421Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2023-35721",
      "date": "2026-11-14",
      "epss": "0.00997",
      "percentile": "0.63273"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unknown",
                "product": "Multiple Routers",
                "vendor": "NETGEAR",
                "versions": [
                  {
                    "status": "affected",
                    "version": "1.0.12.120_2.0.83"
                  }
                ]
              }
            ],
            "source": "zdi-disclosures@trendmicro.com"
          },
          {
            "affectedData": [
              {
                "cpes": [
                  "cpe:2.3:a:netgear:rax50_firmware:*:*:*:*:*:*:*:*"
                ],
                "defaultStatus": "unknown",
                "product": "rax50_firmware",
                "vendor": "netgear",
                "versions": [
                  {
                    "lessThan": "1.1.15.128",
                    "status": "affected",
                    "version": "0",
                    "versionType": "custom"
                  }
                ]
              }
            ],
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:netgear:rax50_firmware:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "0E63890A-FC81-423D-9EAA-F5BA6EEB3F81",
                    "versionEndExcluding": "1.0.15.128",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:h:netgear:rax50:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "C430976E-24C0-4EA7-BF54-F9C188AB9C01",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "NETGEAR Multiple Routers curl_post Improper Certificate Validation Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to compromise the integrity of downloaded information on affected installations of multiple NETGEAR routers. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the update functionality, which operates over HTTPS. The issue results from the lack of proper validation of the certificate presented by the server. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-19981."
          },
          {
            "lang": "es",
            "value": "NETGEAR M\u00faltiples enrutadores curl_post Vulnerabilidad de ejecuci\u00f3n remota de c\u00f3digo de validaci\u00f3n de certificado incorrecta. Esta vulnerabilidad permite a atacantes adyacentes a la red comprometer la integridad de la informaci\u00f3n descargada en instalaciones afectadas de m\u00faltiples enrutadores NETGEAR. No se requiere autenticaci\u00f3n para aprovechar esta vulnerabilidad. La falla espec\u00edfica existe dentro de la funcionalidad de actualizaci\u00f3n, que opera a trav\u00e9s de HTTPS. El problema se debe a la falta de validaci\u00f3n adecuada del certificado presentado por el servidor. Un atacante puede aprovechar esto junto con otras vulnerabilidades para ejecutar c\u00f3digo arbitrario en el contexto de la ra\u00edz. Fue ZDI-CAN-19981."
          }
        ],
        "id": "CVE-2023-35721",
        "lastModified": "2026-06-17T06:05:04.567",
        "metrics": {
          "cvssMetricV30": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 8.1,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.0"
              },
              "exploitabilityScore": 2.2,
              "impactScore": 5.9,
              "source": "zdi-disclosures@trendmicro.com",
              "type": "Secondary"
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "ADJACENT_NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 8.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2023-35721",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-06-05T20:07:02.975691Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2024-05-03T02:15:34.800",
        "references": [
          {
            "source": "zdi-disclosures@trendmicro.com",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://kb.netgear.com/000065668/Security-Advisory-for-Improper-Remote-Server-Certificate-Validation-on-the-RAX50-PSV-2023-0019"
          },
          {
            "source": "zdi-disclosures@trendmicro.com",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.zerodayinitiative.com/advisories/ZDI-23-893/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://kb.netgear.com/000065668/Security-Advisory-for-Improper-Remote-Server-Certificate-Validation-on-the-RAX50-PSV-2023-0019"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.zerodayinitiative.com/advisories/ZDI-23-893/"
          }
        ],
        "sourceIdentifier": "zdi-disclosures@trendmicro.com",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-295"
              }
            ],
            "source": "zdi-disclosures@trendmicro.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2026-03-27T11:30:05+00:00",
      "cve": "CVE-2023-35721",
      "id": "CVE-2023-35721",
      "initial_release_date": "2023-06-30T18:54:43.898000+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "NETGEAR Multiple Routers curl_post Improper Certificate Validation Remote Code Execution Vulnerability",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-35721.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2024-08-02T16:30:44.421Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "name": "ZDI-23-893",
                "tags": [
                  "x_research-advisory",
                  "x_transferred"
                ],
                "url": "https://www.zerodayinitiative.com/advisories/ZDI-23-893/"
              },
              {
                "name": "vendor-provided URL",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "https://kb.netgear.com/000065668/Security-Advisory-for-Improper-Remote-Server-Certificate-Validation-on-the-RAX50-PSV-2023-0019"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "affected": [
              {
                "cpes": [
                  "cpe:2.3:a:netgear:rax50_firmware:*:*:*:*:*:*:*:*"
                ],
                "defaultStatus": "unknown",
                "product": "rax50_firmware",
                "vendor": "netgear",
                "versions": [
                  {
                    "lessThan": "1.1.15.128",
                    "status": "affected",
                    "version": "0",
                    "versionType": "custom"
                  }
                ]
              }
            ],
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2023-35721",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2024-06-05T20:07:02.975691Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2024-06-05T20:12:26.730Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unknown",
              "product": "Multiple Routers",
              "vendor": "NETGEAR",
              "versions": [
                {
                  "status": "affected",
                  "version": "1.0.12.120_2.0.83"
                }
              ]
            }
          ],
          "dateAssigned": "2023-06-15T15:31:13.933-05:00",
          "datePublic": "2023-06-30T13:54:43.898-05:00",
          "descriptions": [
            {
              "lang": "en",
              "value": "NETGEAR Multiple Routers curl_post Improper Certificate Validation Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to compromise the integrity of downloaded information on affected installations of multiple NETGEAR routers. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the update functionality, which operates over HTTPS. The issue results from the lack of proper validation of the certificate presented by the server. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-19981."
            }
          ],
          "metrics": [
            {
              "cvssV3_0": {
                "baseScore": 8.1,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.0"
              },
              "format": "CVSS"
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-295",
                  "description": "CWE-295: Improper Certificate Validation",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2024-05-03T01:57:40.905Z",
            "orgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
            "shortName": "zdi"
          },
          "references": [
            {
              "name": "ZDI-23-893",
              "tags": [
                "x_research-advisory"
              ],
              "url": "https://www.zerodayinitiative.com/advisories/ZDI-23-893/"
            },
            {
              "name": "vendor-provided URL",
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://kb.netgear.com/000065668/Security-Advisory-for-Improper-Remote-Server-Certificate-Validation-on-the-RAX50-PSV-2023-0019"
            }
          ],
          "source": {
            "lang": "en",
            "value": "Zach Hanley (@hacks_zach) of Horizon3 A.I."
          },
          "title": "NETGEAR Multiple Routers curl_post Improper Certificate Validation Remote Code Execution Vulnerability"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
        "assignerShortName": "zdi",
        "cveId": "CVE-2023-35721",
        "datePublished": "2024-05-03T01:57:40.905Z",
        "dateReserved": "2023-06-15T20:23:02.753Z",
        "dateUpdated": "2024-08-02T16:30:44.421Z",
        "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
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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.