CVE-2025-54581

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{"affected": [{"affectedData": [{"product": "vproxy", "vendor": "0x676e67", "versions": [{"status": "affected", "version": "< 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 '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."}, {"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 'configuredUser-ttl-0'), la operaci\u00f3n de m\u00f3dulo 'timestamp % ttl' 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"}]}

{}

{"created": "2025-07-31T10:09:15.620682+00:00", "updated": "2025-07-31T10:09:15.620741+00:00", "vendors": ["0x676e67", "0x676e67$PRODUCT$vproxy"]}