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119 lines
3.9 KiB
JSON
119 lines
3.9 KiB
JSON
{
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"id": "CVE-2020-9451",
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"sourceIdentifier": "cve@mitre.org",
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"published": "2021-05-25T12:15:07.797",
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"lastModified": "2021-06-03T14:05:10.747",
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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 Acronis True Image 2020 24.5.22510. anti_ransomware_service.exe keeps a log in a folder where unprivileged users have write permissions. The logs are generated in a predictable pattern, allowing an unprivileged user to create a hardlink from a (not yet created) log file to anti_ransomware_service.exe. On reboot, this forces the anti_ransomware_service to try to write its log into its own process, crashing in a SHARING VIOLATION. This crash occurs on every reboot."
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},
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{
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"lang": "es",
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"value": "Se detect\u00f3 un problema en Acronis True Image 2020 versiones 24.5.22510. El archivo anti_ransomware_service.exe mantiene un registro en una carpeta donde usuarios no privilegiados tienen permisos de escritura. Los registros son generados en un patr\u00f3n predecible, permitiendo a un usuario no privilegiado crear un enlace f\u00edsico desde un archivo de registro (a\u00fan no dise\u00f1ado) hacia el archivo anti_ransomware_service.exe. Al reiniciar, esto obliga a anti_ransomware_service a intentar escribir su registro en su propio proceso, bloque\u00e1ndose en una SHARING VIOLATION. Este bloqueo ocurre en cada reinicio"
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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": "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-276"
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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:a:acronis:true_image_2020:24.5.22510:*:*:*:*:*:*:*",
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"matchCriteriaId": "5098DA80-2939-413C-AC35-A0D3A455CA28"
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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://danishcyberdefence.dk/blog",
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"source": "cve@mitre.org",
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"tags": [
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"Third Party Advisory"
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]
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},
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{
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"url": "https://madsjoensen.dk/cve-2020-9451/",
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"source": "cve@mitre.org",
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"tags": [
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"Exploit",
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"Third Party Advisory"
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]
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},
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{
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"url": "https://www.acronis.com",
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"source": "cve@mitre.org",
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"tags": [
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"Vendor Advisory"
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]
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}
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]
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} |