FKIE_CVE-2023-43644

Vulnerability from fkie_nvd - Published: 2023-09-25 20:15 - Updated: 2026-06-17 06:26
Severity
9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
Sing-box is an open source proxy system. Affected versions are subject to an authentication bypass when specially crafted requests are sent to sing-box. This affects all SOCKS5 inbounds with user authentication and an attacker may be able to bypass authentication. Users are advised to update to sing-box 1.4.4 or to 1.5.0-rc.4. Users unable to update should not expose the SOCKS5 inbound to insecure environments.
References
security-advisories@github.comhttps://github.com/SagerNet/sing-box/security/advisories/GHSA-r5hm-mp3j-285gVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/SagerNet/sing-box/security/advisories/GHSA-r5hm-mp3j-285gVendor Advisory
Impacted products
Vendor Product Version
sagernet sing-box *
sagernet sing-box 1.5.0
sagernet sing-box 1.5.0
sagernet sing-box 1.5.0
sagernet sing-box 1.5.0
sagernet sing-box 1.5.0
sagernet sing-box 1.5.0
sagernet sing-box 1.5.0
sagernet sing-box 1.5.0
sagernet sing-box 1.5.0
sagernet sing-box 1.5.0
sagernet sing-box 1.5.0
sagernet sing-box 1.5.0
sagernet sing-box 1.5.0
sagernet sing-box 1.5.0
sagernet sing-box 1.5.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "sing-box",
          "vendor": "SagerNet",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.4.5"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.5.0-beta.1, \u003c 1.5.0-rc.4"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    },
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:sagernet:sing-box:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unknown",
          "product": "sing-box",
          "vendor": "sagernet",
          "versions": [
            {
              "lessThan": "1.5.0-rc.5",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:sagernet:sing-box:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "4972A756-DC5E-43FB-B620-E427D21C2C75",
              "versionEndExcluding": "1.4.5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sagernet:sing-box:1.5.0:beta1:*:*:*:*:*:*",
              "matchCriteriaId": "ADAC3151-F2C5-4980-A536-98BDDDD8E3ED",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sagernet:sing-box:1.5.0:beta10:*:*:*:*:*:*",
              "matchCriteriaId": "D264A330-9D7F-43C3-856E-3396ACC0833A",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sagernet:sing-box:1.5.0:beta11:*:*:*:*:*:*",
              "matchCriteriaId": "2504CDDA-98C0-468C-9086-A5E1751F5DEF",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sagernet:sing-box:1.5.0:beta12:*:*:*:*:*:*",
              "matchCriteriaId": "D8EDF2D9-103D-45AD-ACCD-C6DF4BB9A404",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sagernet:sing-box:1.5.0:beta2:*:*:*:*:*:*",
              "matchCriteriaId": "3300566A-5BD3-4A71-AF67-E531E3370BAF",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sagernet:sing-box:1.5.0:beta3:*:*:*:*:*:*",
              "matchCriteriaId": "75092672-6335-4EEF-A93C-AE2AA748D7CE",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sagernet:sing-box:1.5.0:beta4:*:*:*:*:*:*",
              "matchCriteriaId": "703D6A00-02E1-4106-AB7F-97DC45765EFA",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sagernet:sing-box:1.5.0:beta5:*:*:*:*:*:*",
              "matchCriteriaId": "216B8A68-7463-4C0C-9076-AAB69D05C366",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sagernet:sing-box:1.5.0:beta6:*:*:*:*:*:*",
              "matchCriteriaId": "13845DC3-7381-49F4-A247-AA568E451078",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sagernet:sing-box:1.5.0:beta7:*:*:*:*:*:*",
              "matchCriteriaId": "2892FCCF-A001-4466-8070-62CD7EBE1B28",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sagernet:sing-box:1.5.0:beta8:*:*:*:*:*:*",
              "matchCriteriaId": "2BC1E39F-E7D8-41C9-B64A-2241A540D543",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sagernet:sing-box:1.5.0:beta9:*:*:*:*:*:*",
              "matchCriteriaId": "2C1725F2-4B98-46F1-8EF2-11E42C3B6260",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sagernet:sing-box:1.5.0:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "91E7CBF9-8577-4F59-83D4-1505AED807B8",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sagernet:sing-box:1.5.0:rc2:*:*:*:*:*:*",
              "matchCriteriaId": "31FA3E9E-8ED2-4DDF-93DB-8F0325DDD752",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sagernet:sing-box:1.5.0:rc3:*:*:*:*:*:*",
              "matchCriteriaId": "8C21D94A-A22B-46E5-987B-304920106669",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Sing-box is an open source proxy system. Affected versions are subject to an authentication bypass when specially crafted requests are sent to sing-box. This affects all SOCKS5 inbounds with user authentication and an attacker may be able to bypass authentication. Users are advised to update to sing-box 1.4.4 or to 1.5.0-rc.4. Users unable to update should not expose the SOCKS5 inbound to insecure environments."
    },
    {
      "lang": "es",
      "value": "Sing-box es un sistema proxy de c\u00f3digo abierto. Las versiones afectadas est\u00e1n sujetas a una omisi\u00f3n de autenticaci\u00f3n cuando se env\u00edan solicitudes especialmente manipuladas a sing-box. Esto afecta a todas las entradas de SOCKS5 con autenticaci\u00f3n de usuario y un atacante puede eludir la autenticaci\u00f3n. Se recomienda a los usuarios que actualicen a sing-box 1.4.4 o 1.5.0-rc.4. Los usuarios que no puedan actualizar no deben exponer el SOCKS5 entrante a entornos inseguros."
    }
  ],
  "id": "CVE-2023-43644",
  "lastModified": "2026-06-17T06:26:08.493",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.1,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-43644",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-09-24T19:28:06.483745Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2023-09-25T20:15:11.977",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/SagerNet/sing-box/security/advisories/GHSA-r5hm-mp3j-285g"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/SagerNet/sing-box/security/advisories/GHSA-r5hm-mp3j-285g"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-306"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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