Vulnerability-Lookup

VAR-200210-0277

Vulnerability from variot - Updated: 2025-04-03 22:14

Cisco Virtual Private Network (VPN) Client software 2.x.x, and 3.x before 3.5.1C, does not properly verify that certificate DN fields match those of the certificate from the VPN Concentrator, which allows remote attackers to conduct man-in-the-middle attacks. A flaw in the Cisco VPN Client prevents the client from sufficiently validating credentials supplied in a certificate used for VPN privacy. The client does not properly validate Distinguished Names (DN) contained in some certificates, and may trust certificates supplied by a third party that represent a malicious host. It can be used under the Microsoft Windows operating system, and can also be used under the Linux operating system. CISCO designated this vulnerability number as: CSCdw87717

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CVE-2002-1106 (GCVE-0-2002-1106)

Vulnerability from cvelistv5 – Published: 2004-09-01 04:00 – Updated: 2024-08-08 03:12

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 28/100 over 2329 records in the last 180 days details

References

3 references

URL	Tags
http://www.cisco.com/warp/public/707/vpnclient-mu…	vendor-advisoryx_refsource_CISCO
https://exchange.xforce.ibmcloud.com/vulnerabilit…	vdb-entryx_refsource_XF
http://www.securityfocus.com/bid/5652	vdb-entryx_refsource_BID

Date Public

2002-09-05 00:00

Show details on NVD website

JSON

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              "value": "Cisco Virtual Private Network (VPN) Client software 2.x.x, and 3.x before 3.5.1C, does not properly verify that certificate DN fields match those of the certificate from the VPN Concentrator, which allows remote attackers to conduct man-in-the-middle attacks."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "20020905 Cisco VPN Client Multiple Vulnerabilities - Second Set",
              "refsource": "CISCO",
              "url": "http://www.cisco.com/warp/public/707/vpnclient-multiple2-vuln-pub.shtml"
            },
            {
              "name": "cisco-vpn-certificate-mitm(10045)",
              "refsource": "XF",
              "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/10045"
            },
            {
              "name": "5652",
              "refsource": "BID",
              "url": "http://www.securityfocus.com/bid/5652"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2002-1106",
    "datePublished": "2004-09-01T04:00:00.000Z",
    "dateReserved": "2002-09-06T00:00:00.000Z",
    "dateUpdated": "2024-08-08T03:12:16.934Z",
    "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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

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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.

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