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106 lines
3.3 KiB
JSON
106 lines
3.3 KiB
JSON
{
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"id": "CVE-2021-20219",
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"sourceIdentifier": "secalert@redhat.com",
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"published": "2021-03-23T17:15:13.607",
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"lastModified": "2021-03-26T19:48:33.537",
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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": "A denial of service vulnerability was found in n_tty_receive_char_special in drivers/tty/n_tty.c of the Linux kernel. In this flaw a local attacker with a normal user privilege could delay the loop (due to a changing ldata->read_head, and a missing sanity check) and cause a threat to the system availability."
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},
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{
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"lang": "es",
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"value": "Se encontr\u00f3 una vulnerabilidad de denegaci\u00f3n de servicio en la funci\u00f3n n_tty_receive_char_special en el archivo drivers/tty/n_tty.c del kernel de Linux. En este fallo, un atacante local con un privilegio de usuario normal podr\u00eda retrasar el ciclo (debido a un cambio de ldata-)read_head, y una falta de comprobaci\u00f3n de saneamiento) y causar una amenaza a la disponibilidad del sistema"
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}
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],
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"metrics": {
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"cvssMetricV31": [
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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": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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"attackVector": "LOCAL",
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"attackComplexity": "LOW",
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"privilegesRequired": "LOW",
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"userInteraction": "NONE",
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"scope": "UNCHANGED",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"availabilityImpact": "HIGH",
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"baseScore": 5.5,
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"baseSeverity": "MEDIUM"
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},
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"exploitabilityScore": 1.8,
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"impactScore": 3.6
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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:L/Au:N/C:N/I:N/A:P",
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"accessVector": "LOCAL",
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"accessComplexity": "LOW",
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"authentication": "NONE",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"availabilityImpact": "PARTIAL",
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"baseScore": 2.1
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},
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"baseSeverity": "LOW",
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"exploitabilityScore": 3.9,
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"impactScore": 2.9,
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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": "secalert@redhat.com",
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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-697"
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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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"versionEndExcluding": "4.18",
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"matchCriteriaId": "3249552B-A101-45A3-9F46-0E0F0BDBA9E3"
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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": "https://bugzilla.redhat.com/show_bug.cgi?id=1923738",
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"source": "secalert@redhat.com",
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"tags": [
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"Issue Tracking",
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"Third Party Advisory"
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]
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}
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]
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} |