FKIE_CVE-2023-45811

Vulnerability from fkie_nvd - Published: 2023-10-17 23:15 - Updated: 2025-07-22 15:06
Severity ?
8.1 (High) - CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
Synchrony deobfuscator is a javascript cleaner & deobfuscator. A `__proto__` pollution vulnerability exists in versions before v2.4.4. Successful exploitation could lead to arbitrary code execution. A `__proto__` pollution vulnerability exists in the `LiteralMap` transformer allowing crafted input to modify properties in the Object prototype. A fix has been released in `deobfuscator@2.4.4`. Users are advised to upgrade. Users unable to upgrade should launch node with the [--disable-proto=delete][disable-proto] or [--disable-proto=throw][disable-proto] flags
References
security-advisories@github.comhttps://github.com/relative/synchrony/commit/b583126be94c4db7c5a478f1c5204bfb4162cf40Patch
security-advisories@github.comhttps://github.com/relative/synchrony/security/advisories/GHSA-jg82-xh3w-rhxxExploit, Vendor Advisory
security-advisories@github.comhttps://github.com/relative/synchrony/security/advisories/src/transformers/literalmap.tsBroken Link
af854a3a-2127-422b-91ae-364da2661108https://github.com/relative/synchrony/commit/b583126be94c4db7c5a478f1c5204bfb4162cf40Patch
af854a3a-2127-422b-91ae-364da2661108https://github.com/relative/synchrony/security/advisories/GHSA-jg82-xh3w-rhxxExploit, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/relative/synchrony/security/advisories/src/transformers/literalmap.tsBroken Link
Impacted products
Vendor Product Version
relative synchrony *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:relative:synchrony:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "49B74BDF-C6AA-4C0C-9FA2-FD31C323BD2F",
              "versionEndExcluding": "2.4.4",
              "versionStartIncluding": "2.0.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Synchrony deobfuscator is a javascript cleaner \u0026 deobfuscator.  A `__proto__` pollution vulnerability exists in versions before v2.4.4. Successful exploitation could lead to arbitrary code execution. A `__proto__` pollution vulnerability exists in the `LiteralMap` transformer allowing crafted input to modify properties in the Object prototype. A fix has been released in `deobfuscator@2.4.4`. Users are advised to upgrade. Users unable to upgrade should launch node with the [--disable-proto=delete][disable-proto] or [--disable-proto=throw][disable-proto] flags\n"
    },
    {
      "lang": "es",
      "value": "Synchrony deofuscator es un limpiador y desofuscador de JavaScript. Existe una vulnerabilidad de contaminaci\u00f3n `__proto__` en versiones anteriores a la v2.4.4. Una explotaci\u00f3n exitosa podr\u00eda conducir a la ejecuci\u00f3n de c\u00f3digo arbitrario. Existe una vulnerabilidad de contaminaci\u00f3n `__proto__` en el transformador `LiteralMap` que permite que una entrada manipulada modifique las propiedades en el prototipo del objeto. Se ha publicado una soluci\u00f3n en `deobfuscator@2.4.4`. Se recomienda a los usuarios que actualicen. Los usuarios que no puedan actualizar deben iniciar el nodo con los indicadores [--disable-proto=delete][disable-proto] o [--disable-proto=throw][disable-proto]"
    }
  ],
  "id": "CVE-2023-45811",
  "lastModified": "2025-07-22T15:06:38.370",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.4,
        "impactScore": 6.0,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2023-10-17T23:15:12.487",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/relative/synchrony/commit/b583126be94c4db7c5a478f1c5204bfb4162cf40"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/relative/synchrony/security/advisories/GHSA-jg82-xh3w-rhxx"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Broken Link"
      ],
      "url": "https://github.com/relative/synchrony/security/advisories/src/transformers/literalmap.ts"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/relative/synchrony/commit/b583126be94c4db7c5a478f1c5204bfb4162cf40"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/relative/synchrony/security/advisories/GHSA-jg82-xh3w-rhxx"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Broken Link"
      ],
      "url": "https://github.com/relative/synchrony/security/advisories/src/transformers/literalmap.ts"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1321"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1321"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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