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VAR-202401-0183

Vulnerability from variot - Updated: 2024-05-17 22:57

A vulnerability was found in Totolink NR1800X 9.1.0u.6279_B20210910 and classified as critical. Affected by this issue is the function loginAuth of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument password leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. VDB-249854 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way. TOTOLINK NR1800X is an excellent 5G NR indoor Wi-Fi and SIP CPE from the Chinese company Zeon Electronics (TOTOLINK). Designed to provide fast and easy deployment of NR fixed data services to homes and offices.

Totolink NR1800X version 9.1.0u.6279_B20210910 has a buffer overflow vulnerability. The vulnerability originates from the failure of the function loginAuth in the file /cgi-bin/cstecgi.cgi to correctly verify the length of the input data. A remote attacker can exploit this vulnerability on the system. Execute arbitrary code or cause a denial of service attack

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CVE-2023-7220 (GCVE-0-2023-7220)

Vulnerability from cvelistv5 – Published: 2024-01-09 07:31 – Updated: 2025-06-17 20:39

Title

Totolink NR1800X cstecgi.cgi loginAuth stack-based overflow

Summary

Severity

9.8 (Critical)


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

9.8 (Critical)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/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 16:23 UTC

CWE

CWE-121 - Stack-based Buffer Overflow

Assigner

VulDB mitre root

References

3 references

URL	Tags
https://vuldb.com/?id.249854	vdb-entrytechnical-description
https://vuldb.com/?ctiid.249854	signaturepermissions-required
https://github.com/jylsec/vuldb/blob/main/TOTOLIN…	broken-linkexploit

Impacted products

1 product

Vendor	Product	Version
Totolink	NR1800X	Affected: 9.1.0u.6279_B20210910

Credits

jylsec (VulDB User)

Show details on NVD website

JSON

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          "url": "https://github.com/jylsec/vuldb/blob/main/TOTOLINK/NR1800X/1/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": "2024-01-25T07:50:20.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "Totolink NR1800X cstecgi.cgi loginAuth stack-based overflow"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2023-7220",
    "datePublished": "2024-01-09T07:31:03.195Z",
    "dateReserved": "2024-01-07T08:40:43.824Z",
    "dateUpdated": "2025-06-17T20:39:18.356Z",
    "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.