CVE-2025-48945

{"id": "CVE-2025-48945", "cveTags": [], "metrics": {"cvssMetricV40": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.2, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "published": "2025-06-20T20:15:33.570", "references": [{"url": "https://github.com/aio-libs/aiodns/commit/f259a6e3650555157af53ac2b39f2ff545321d55", "source": "security-advisories@github.com"}, {"url": "https://github.com/aio-libs/aiodns/releases/tag/v3.5.0", "source": "security-advisories@github.com"}, {"url": "https://github.com/saghul/pycares/commit/ebfd7d71eb8e74bc1057a361ea79a5906db510d4", "source": "security-advisories@github.com"}, {"url": "https://github.com/saghul/pycares/releases/tag/v4.9.0", "source": "security-advisories@github.com"}, {"url": "https://github.com/saghul/pycares/security/advisories/GHSA-5qpg-rh4j-qp35", "source": "security-advisories@github.com"}, {"url": "https://github.com/saghul/pycares/security/advisories/GHSA-5qpg-rh4j-qp35", "source": "security-advisories@github.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "pycares is a Python module which provides an interface to c-ares. c-ares is a C library that performs DNS requests and name resolutions asynchronously. Prior to version 4.9.0, pycares is vulnerable to a use-after-free condition that occurs when a Channel object is garbage collected while DNS queries are still pending. This results in a fatal Python error and interpreter crash. The vulnerability has been fixed in pycares 4.9.0 by implementing a safe channel destruction mechanism."}, {"lang": "es", "value": "Pycares es un m\u00f3dulo de Python que proporciona una interfaz para c-ares. C-ares es una librer\u00eda de C que realiza solicitudes DNS y resoluciones de nombres de forma as\u00edncrona. En versiones anteriores a la 4.9.0, Pycares era vulnerable a una condici\u00f3n de use-after-free que se produce cuando un objeto de canal se recolecta como basura mientras las consultas DNS a\u00fan est\u00e1n pendientes. Esto provoca un error fatal de Python y un fallo del int\u00e9rprete. Esta vulnerabilidad se ha corregido en Pycares 4.9.0 mediante la implementaci\u00f3n de un mecanismo seguro de destrucci\u00f3n de canales."}], "lastModified": "2025-06-23T20:16:21.633", "sourceIdentifier": "security-advisories@github.com"}