Vulnerability-Lookup

ubuntu-cve-2021-4070

Vulnerability from osv_ubuntu

Published

2022-02-23 20:15

Modified

2025-09-08 16:46

Summary

Details

Off-by-one Error in GitHub repository v2fly/v2ray-core prior to 4.44.0.

Severity

5.9 (Medium)


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

9.1 (Critical)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2021-4070	REPORT
	https://huntr.dev/bounties/8da19456-4d89-41ef-978…	REPORT
	https://github.com/v2fly/v2ray-core/commit/c1af2b…	REPORT
	https://www.cve.org/CVERecord?id=CVE-2021-4070	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "golang-v2ray-core-dev",
            "binary_version": "4.34.0-5"
          },
          {
            "binary_name": "v2ray",
            "binary_version": "4.34.0-5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "golang-v2ray-core",
        "purl": "pkg:deb/ubuntu/golang-v2ray-core@4.34.0-5?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.34.0-1",
        "4.34.0-5"
      ]
    }
  ],
  "aliases": [],
  "details": "Off-by-one Error in GitHub repository v2fly/v2ray-core prior to 4.44.0.",
  "id": "UBUNTU-CVE-2021-4070",
  "modified": "2025-09-08T16:46:51Z",
  "published": "2022-02-23T20:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-4070"
    },
    {
      "type": "REPORT",
      "url": "https://huntr.dev/bounties/8da19456-4d89-41ef-9781-a41efd6a1877/"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/v2fly/v2ray-core/commit/c1af2bfd7aa59a4482aa7f6ec4b9208c1d350b5c"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-4070"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-4070"
  ]
}

CVE-2021-4070 (GCVE-0-2021-4070)

Vulnerability from cvelistv5 – Published: 2022-02-23 19:50 – Updated: 2024-08-03 17:16

Title

Off-by-one Error in v2fly/v2ray-core

Summary

Off-by-one Error in GitHub repository v2fly/v2ray-core prior to 4.44.0.

Severity

5.9 (Medium)


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

CWE

CWE-193 - Off-by-one Error

Assigner

@huntrdev

References

2 references

URL	Tags
https://huntr.dev/bounties/8da19456-4d89-41ef-978…	x_refsource_CONFIRM
https://github.com/v2fly/v2ray-core/commit/c1af2b…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
v2fly	v2fly/v2ray-core	Affected: unspecified , < 4.44.0 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:16:03.674Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://huntr.dev/bounties/8da19456-4d89-41ef-9781-a41efd6a1877"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/v2fly/v2ray-core/commit/c1af2bfd7aa59a4482aa7f6ec4b9208c1d350b5c"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "v2fly/v2ray-core",
          "vendor": "v2fly",
          "versions": [
            {
              "lessThan": "4.44.0",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Off-by-one Error in GitHub repository v2fly/v2ray-core prior to 4.44.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-193",
              "description": "CWE-193 Off-by-one Error",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-02-23T19:50:10.000Z",
        "orgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
        "shortName": "@huntrdev"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://huntr.dev/bounties/8da19456-4d89-41ef-9781-a41efd6a1877"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/v2fly/v2ray-core/commit/c1af2bfd7aa59a4482aa7f6ec4b9208c1d350b5c"
        }
      ],
      "source": {
        "advisory": "8da19456-4d89-41ef-9781-a41efd6a1877",
        "discovery": "EXTERNAL"
      },
      "title": "Off-by-one Error in v2fly/v2ray-core",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security@huntr.dev",
          "ID": "CVE-2021-4070",
          "STATE": "PUBLIC",
          "TITLE": "Off-by-one Error in v2fly/v2ray-core"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "v2fly/v2ray-core",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "4.44.0"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "v2fly"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Off-by-one Error in GitHub repository v2fly/v2ray-core prior to 4.44.0."
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
            "version": "3.0"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-193 Off-by-one Error"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://huntr.dev/bounties/8da19456-4d89-41ef-9781-a41efd6a1877",
              "refsource": "CONFIRM",
              "url": "https://huntr.dev/bounties/8da19456-4d89-41ef-9781-a41efd6a1877"
            },
            {
              "name": "https://github.com/v2fly/v2ray-core/commit/c1af2bfd7aa59a4482aa7f6ec4b9208c1d350b5c",
              "refsource": "MISC",
              "url": "https://github.com/v2fly/v2ray-core/commit/c1af2bfd7aa59a4482aa7f6ec4b9208c1d350b5c"
            }
          ]
        },
        "source": {
          "advisory": "8da19456-4d89-41ef-9781-a41efd6a1877",
          "discovery": "EXTERNAL"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
    "assignerShortName": "@huntrdev",
    "cveId": "CVE-2021-4070",
    "datePublished": "2022-02-23T19:50:10.000Z",
    "dateReserved": "2021-12-05T00:00:00.000Z",
    "dateUpdated": "2024-08-03T17:16:03.674Z",
    "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.

Action not permitted

ubuntu-cve-2021-4070

Vulnerability from osv_ubuntu

CVE-2021-4070 (GCVE-0-2021-4070)

Tags

Sightings

Nomenclature