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VAR-202401-0755

Vulnerability from variot - Updated: 2024-05-17 23:04

A vulnerability, which was classified as critical, was found in Totolink N350RT 9.3.5u.6139_B202012. Affected is the function loginAuth of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument password leads to stack-based buffer overflow. It is possible to launch the attack remotely. The identifier of this vulnerability is VDB-249852. NOTE: The vendor was contacted early about this disclosure but did not respond in any way. TOTOLINK of n350rt A stack-based buffer overflow vulnerability exists in the firmware.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. TOTOLINK N350RT is a small home router from China's Zeon Electronics (TOTOLINK) company. This vulnerability originates from the failure of the password parameter of the loginAuth function in the /cgi-bin/cstecgi.cgi page to correctly verify the length of the input data. A remote attacker can use this vulnerability to execute arbitrary code on the system. or result in a denial of service attack

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CVE-2023-7218 (GCVE-0-2023-7218)

Vulnerability from cvelistv5 – Published: 2024-01-08 21:00 – Updated: 2025-06-17 20:39

Title

Totolink N350RT cstecgi.cgi loginAuth stack-based overflow

Summary

Severity

7.2 (High)


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

7.2 (High)


                        
                          CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-01-10 15:24 UTC

CWE

CWE-121 - Stack-based Buffer Overflow

Assigner

VulDB mitre root

References

3 references

URL	Tags
https://vuldb.com/?id.249852	vdb-entrytechnical-description
https://vuldb.com/?ctiid.249852	signaturepermissions-required
https://github.com/jylsec/vuldb/blob/main/TOTOLIN…	broken-link

Impacted products

1 product

Vendor	Product	Version
Totolink	N350RT	Affected: 9.3.5u.6139_B202012

Credits

jylsec (VulDB User)

Show details on NVD website

JSON

To clipboard

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      }
    ],
    "cna": {
      "affected": [
        {
          "product": "N350RT",
          "vendor": "Totolink",
          "versions": [
            {
              "status": "affected",
              "version": "9.3.5u.6139_B202012"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "jylsec (VulDB User)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability, which was classified as critical, was found in Totolink N350RT 9.3.5u.6139_B202012. Affected is the function loginAuth of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument password leads to stack-based buffer overflow. It is possible to launch the attack remotely. The identifier of this vulnerability is VDB-249852. NOTE: The vendor was contacted early about this disclosure but did not respond in any way."
        },
        {
          "lang": "de",
          "value": "Es wurde eine Schwachstelle in Totolink N350RT 9.3.5u.6139_B202012 gefunden. Sie wurde als kritisch eingestuft. Es geht dabei um die Funktion loginAuth der Datei /cgi-bin/cstecgi.cgi. Durch das Beeinflussen des Arguments password mit unbekannten Daten kann eine stack-based buffer overflow-Schwachstelle ausgenutzt werden. Der Angriff kann \u00fcber das Netzwerk passieren."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 8.3,
            "vectorString": "AV:N/AC:L/Au:M/C:C/I:C/A:C",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-121",
              "description": "CWE-121 Stack-based Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-02-13T07:28:17.536Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/?id.249852"
        },
        {
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/?ctiid.249852"
        },
        {
          "tags": [
            "broken-link"
          ],
          "url": "https://github.com/jylsec/vuldb/blob/main/TOTOLINK/N350RT/4/README.md"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2024-01-07T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2024-01-07T00:00:00.000Z",
          "value": "CVE reserved"
        },
        {
          "lang": "en",
          "time": "2024-01-07T01:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2024-01-25T07:27:27.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "Totolink N350RT cstecgi.cgi loginAuth stack-based overflow"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2023-7218",
    "datePublished": "2024-01-08T21:00:05.100Z",
    "dateReserved": "2024-01-07T08:37:38.841Z",
    "dateUpdated": "2025-06-17T20:39:14.838Z",
    "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.

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.

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.