mirror of
https://github.com/fkie-cad/nvd-json-data-feeds.git
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122 lines
4.1 KiB
JSON
122 lines
4.1 KiB
JSON
{
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"id": "CVE-2018-12633",
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"sourceIdentifier": "cve@mitre.org",
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"published": "2018-06-22T00:29:00.270",
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"lastModified": "2018-08-21T15:42:37.667",
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"vulnStatus": "Analyzed",
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"descriptions": [
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{
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"lang": "en",
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"value": "An issue was discovered in the Linux kernel through 4.17.2. vbg_misc_device_ioctl() in drivers/virt/vboxguest/vboxguest_linux.c reads the same user data twice with copy_from_user. The header part of the user data is double-fetched, and a malicious user thread can tamper with the critical variables (hdr.size_in and hdr.size_out) in the header between the two fetches because of a race condition, leading to severe kernel errors, such as buffer over-accesses. This bug can cause a local denial of service and information leakage."
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},
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{
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"lang": "es",
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"value": "Se ha descubierto un problema en el kernel de Linux hasta la versi\u00f3n 4.17.2. vbg_misc_device_ioctl() en drivers/virt/vboxguest/vboxguest_linux.c lee los mismos datos de usuario dos veces con copy_from_user. La cabecera de los datos de usuario es de tipo double-fetch y un hilo de usuario malicioso puede falsificar las variables cr\u00edticas (hdr.size_in y hdr.size_out) en la cabecera entre los dos fetch debido a una condici\u00f3n de carrera. Esto desemboca en varios errores del kernel, como accesos espec\u00edficos al b\u00fafer. Este error puede provocar una denegaci\u00f3n de servicio (DoS) local y una fuga de informaci\u00f3n."
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}
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],
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"metrics": {
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"cvssMetricV30": [
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{
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"source": "nvd@nist.gov",
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"type": "Primary",
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"cvssData": {
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"version": "3.0",
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"vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H",
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"attackVector": "LOCAL",
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"attackComplexity": "HIGH",
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"privilegesRequired": "LOW",
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"userInteraction": "NONE",
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"scope": "UNCHANGED",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "NONE",
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"availabilityImpact": "HIGH",
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"baseScore": 6.3,
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"baseSeverity": "MEDIUM"
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},
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"exploitabilityScore": 1.0,
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"impactScore": 5.2
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}
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],
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"cvssMetricV2": [
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{
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"source": "nvd@nist.gov",
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"type": "Primary",
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"cvssData": {
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"version": "2.0",
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"vectorString": "AV:L/AC:M/Au:N/C:C/I:N/A:C",
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"accessVector": "LOCAL",
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"accessComplexity": "MEDIUM",
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"authentication": "NONE",
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"confidentialityImpact": "COMPLETE",
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"integrityImpact": "NONE",
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"availabilityImpact": "COMPLETE",
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"baseScore": 6.3
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},
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"baseSeverity": "MEDIUM",
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"exploitabilityScore": 3.4,
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"impactScore": 9.2,
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"acInsufInfo": false,
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"obtainAllPrivilege": false,
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"obtainUserPrivilege": false,
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"obtainOtherPrivilege": false,
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"userInteractionRequired": false
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}
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]
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},
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"weaknesses": [
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{
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"source": "nvd@nist.gov",
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"type": "Primary",
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"description": [
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{
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"lang": "en",
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"value": "CWE-362"
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}
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]
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}
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],
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"configurations": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionEndIncluding": "4.17.2",
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"matchCriteriaId": "A7B1384E-833A-4422-A6B1-F80FB3EA20B6"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bd23a7269834dc7c1f93e83535d16ebc44b75eba",
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"source": "cve@mitre.org",
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"tags": [
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"Patch",
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"Vendor Advisory"
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]
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},
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{
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"url": "https://bugzilla.kernel.org/show_bug.cgi?id=200131",
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"source": "cve@mitre.org",
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"tags": [
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"Issue Tracking",
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"Vendor Advisory"
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]
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},
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{
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"url": "https://github.com/torvalds/linux/commit/bd23a7269834dc7c1f93e83535d16ebc44b75eba",
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"source": "cve@mitre.org",
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"tags": [
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"Patch",
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"Third Party Advisory"
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]
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}
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]
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} |