CVE-2026-45615

{"id": "CVE-2026-45615", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-45615", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-29T16:19:17.286240Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.2, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 4.2, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "mouse07410", "product": "asn1c", "versions": [{"status": "affected", "version": "<= 1.4"}]}]}], "published": "2026-05-29T14:16:30.847", "references": [{"url": "https://github.com/mouse07410/asn1c/security/advisories/GHSA-wxx8-76rw-96j2", "source": "security-advisories@github.com"}, {"url": "https://github.com/mouse07410/asn1c/security/advisories/GHSA-wxx8-76rw-96j2", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-20"}, {"lang": "en", "value": "CWE-125"}, {"lang": "en", "value": "CWE-130"}]}], "descriptions": [{"lang": "en", "value": "mouse07410/asn1c is an ASN.1 compiler. In 1.4 and earlier, a memory safety vulnerability was identified in the OER decoding skeleton files generated by asn1c (specifically INTEGER_oer.c). When parsing a maliciously crafted, zero-length OER payload for a variable-length, non-negative INTEGER type, the decoder fails to validate the required bytes before extracting the Most Significant Bit (MSB). This forces a precise 1-byte Heap Out-of-Bounds (OOB) Read. Because asn1c generated code is primarily deployed to parse untrusted network inputs (such as V2X network protocols, 5G telecom headers, or X.509 certificates), when the decoder processes untrusted network-originated input, a remote attacker can exploit this to cause a Denial of Service (DoS) or trigger incorrect integer interpretation in downstream applications (e.g., protocol state poisoning or logic bypass)."}, {"lang": "es", "value": "mouse07410/asn1c es un compilador ASN.1. En 1.4 y versiones anteriores, se identific\u00f3 una vulnerabilidad de seguridad de memoria en los archivos esqueleto de decodificaci\u00f3n OER generados por asn1c (espec\u00edficamente INTEGER_oer.c). Al analizar una carga \u00fatil OER de longitud cero, creada maliciosamente, para un tipo INTEGER de longitud variable y no negativo, el decodificador no valida los bytes requeridos antes de extraer el Bit M\u00e1s Significativo (MSB). Esto fuerza una lectura fuera de l\u00edmites de la pila (OOB) de 1 byte precisa. Debido a que el c\u00f3digo generado por asn1c se implementa principalmente para analizar entradas de red no confiables (como protocolos de red V2X, encabezados de telecomunicaciones 5G o certificados X.509), cuando el decodificador procesa entradas originadas en la red no confiables, un atacante remoto puede explotar esto para causar una Denegaci\u00f3n de Servicio (DoS) o desencadenar una interpretaci\u00f3n incorrecta de enteros en aplicaciones posteriores (p. ej., envenenamiento de estado de protocolo o bypass de l\u00f3gica)."}], "lastModified": "2026-07-21T12:10:00.090", "sourceIdentifier": "security-advisories@github.com"}