FKIE_CVE-2025-54581

Vulnerability from fkie_nvd - Published: 2025-07-30 20:15 - Updated: 2026-06-17 09:40
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
vproxy is an HTTP/HTTPS/SOCKS5 proxy server. In versions 2.3.3 and below, untrusted data is extracted from the user-controlled HTTP Proxy-Authorization header and passed to Extension::try_from and flows into parse_ttl_extension where it is parsed as a TTL value. If an attacker supplies a TTL of zero (e.g. by using a username such as 'configuredUser-ttl-0'), the modulo operation 'timestamp % ttl' will cause a division by zero panic, causing the server to crash causing a denial-of-service. This is fixed in version 2.4.0.
References
security-advisories@github.comhttps://github.com/0x676e67/vproxy/commit/aa1bf64c5e7f1c471395f9f29175ffc1b16a1079
security-advisories@github.comhttps://github.com/0x676e67/vproxy/releases/tag/v2.4.0
security-advisories@github.comhttps://github.com/0x676e67/vproxy/security/advisories/GHSA-7h24-c332-p48c
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "vproxy",
          "vendor": "0x676e67",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.4.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "vproxy is an HTTP/HTTPS/SOCKS5 proxy server. In versions 2.3.3 and below, untrusted data is extracted from the user-controlled HTTP Proxy-Authorization header and passed to Extension::try_from and flows into parse_ttl_extension where it is parsed as a TTL value. If an attacker supplies a TTL of zero (e.g. by using a username such as \u0027configuredUser-ttl-0\u0027), the modulo operation \u0027timestamp % ttl\u0027 will cause a division by zero panic, causing the server to crash causing a denial-of-service. This is fixed in version 2.4.0."
    },
    {
      "lang": "es",
      "value": "vproxy es un servidor proxy HTTP/HTTPS/SOCKS5. En las versiones 2.3.3 y anteriores, los datos no confiables se extraen del encabezado HTTP Proxy-Authorization, controlado por el usuario, se pasan a Extension::try_from y fluyen a parse_ttl_extension, donde se analizan como un valor TTL. Si un atacante proporciona un valor TTL de cero (por ejemplo, usando un nombre de usuario como \u0027configuredUser-ttl-0\u0027), la operaci\u00f3n de m\u00f3dulo \u0027timestamp % ttl\u0027 provocar\u00e1 un p\u00e1nico por divisi\u00f3n por cero, lo que provocar\u00e1 el bloqueo del servidor y una denegaci\u00f3n de servicio. Esto se solucion\u00f3 en la versi\u00f3n 2.4.0."
    }
  ],
  "id": "CVE-2025-54581",
  "lastModified": "2026-06-17T09:40:20.523",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-54581",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-07-30T20:13:38.841221Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-07-30T20:15:37.907",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/0x676e67/vproxy/commit/aa1bf64c5e7f1c471395f9f29175ffc1b16a1079"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/0x676e67/vproxy/releases/tag/v2.4.0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/0x676e67/vproxy/security/advisories/GHSA-7h24-c332-p48c"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-369"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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