CVE-2026-47272

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{"affected": [{"affectedData": [{"product": "pam_usb", "vendor": "mcdope", "versions": [{"status": "affected", "version": "< 0.9.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.0, the pusb_pad_compare() function in src/pad.c only verified that the user-side pad (~/.pamusb/device.pad) could be read, but did not enforce that the system-side pad (the pad file on the USB device) was also present and readable. If the user-side pad was deleted or unreadable, the function returned a failure that was treated as non-fatal in certain code paths, allowing authentication to succeed without the USB device being verified. A local user can delete their own ~/.pamusb/device.pad to remove the USB device requirement and authenticate without the physical device. This vulnerability is fixed in 0.9.0."}, {"lang": "es", "value": "pam_usb proporciona autenticaci\u00f3n de hardware para Linux utilizando medios extra\u00edbles ordinarios. Antes de la versi\u00f3n 0.9.0, la funci\u00f3n pusb_pad_compare() en src/pad.c solo verificaba que el pad del lado del usuario (~/.pamusb/device.pad) pudiera leerse, pero no exig\u00eda que el pad del lado del sistema (el archivo pad en el dispositivo USB) tambi\u00e9n estuviera presente y fuera legible. Si el pad del lado del usuario era eliminado o ilegible, la funci\u00f3n devolv\u00eda un fallo que se trataba como no fatal en ciertas rutas de c\u00f3digo, permitiendo que la autenticaci\u00f3n tuviera \u00e9xito sin que se verificara el dispositivo USB. Un usuario local puede eliminar su propio ~/.pamusb/device.pad para eliminar el requisito del dispositivo USB y autenticarse sin el dispositivo f\u00edsico. Esta vulnerabilidad se corrige en la versi\u00f3n 0.9.0."}], "id": "CVE-2026-47272", "lastModified": "2026-10-26T11:10:00.157", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 7.1, "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:N", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-47272", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-05-28T12:52:21.630173Z", "version": "2.0.3"}}]}, "published": "2026-05-27T20:16:39.747", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/mcdope/pam_usb/security/advisories/GHSA-vx6f-rrqr-j87c"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-287"}, {"lang": "en", "value": "CWE-908"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,0.9.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "pam_usb", "source": "cna", "vendor": "mcdope"}, "product": "pam_usb", "vendor": "mcdope"}], "created": "2026-05-27T21:45:43.164047+00:00", "updated": "2026-05-29T15:50:05.981667+00:00", "vendors": ["mcdope", "mcdope$PRODUCT$pam_usb"]}