CVE-2017-9605

{"id": "CVE-2017-9605", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.9, "accessVector": "LOCAL", "vectorString": "AV:L/AC:L/Au:N/C:C/I:N/A:N", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "COMPLETE"}, "acInsufInfo": false, "impactScore": 6.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 3.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV30": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2017-06-13T19:29:00.393", "references": [{"url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=07678eca2cf9c9a18584e546c2b2a0d0c9a3150c", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "http://www.debian.org/security/2017/dsa-3927", "source": "cve@mitre.org"}, {"url": "http://www.debian.org/security/2017/dsa-3945", "source": "cve@mitre.org"}, {"url": "http://www.securityfocus.com/bid/99095", "tags": ["VDB Entry", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://github.com/torvalds/linux/commit/07678eca2cf9c9a18584e546c2b2a0d0c9a3150c", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-200"}]}], "descriptions": [{"lang": "en", "value": "The vmw_gb_surface_define_ioctl function (accessible via DRM_IOCTL_VMW_GB_SURFACE_CREATE) in drivers/gpu/drm/vmwgfx/vmwgfx_surface.c in the Linux kernel through 4.11.4 defines a backup_handle variable but does not give it an initial value. If one attempts to create a GB surface, with a previously allocated DMA buffer to be used as a backup buffer, the backup_handle variable does not get written to and is then later returned to user space, allowing local users to obtain sensitive information from uninitialized kernel memory via a crafted ioctl call."}, {"lang": "es", "value": "La funci\u00f3n vmw_gb_surface_define_ioctl (accesible mediante DRM_IOCTL_VMW_GB_SURFACE_CREATE) eb drivers/gpu/drm/vmwgfx/vmwgfx_surface.c en el Kernel de Linux hasta la 4.11.4 define una variable backup_handle pero no da un valor inicial. Si uno intenta crear una superficie GB, con una colocaci\u00f3n previa del buffer DMA va ser usado como un buffer backup, la variable backup_handle no consigue escritura, y despu\u00e9s es devuelto al espacio de usuario, permitiendo a los usuarios locales obtener informaci\u00f3n sensible de la memoria del kernel no inicializada mediante la manipulaci\u00f3n de la llamada ioctl."}], "lastModified": "2017-11-04T01:29:57.133", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CEAAE4E7-00CF-47FC-8331-A5B82622BB91", "versionEndIncluding": "4.11.4"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}