{"id":"CVE-2020-9451","state":"PUBLISHED","title":"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 gen","description":"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.","publishedAt":"2021-05-25T11:01:41.000Z","updatedAt":"2024-08-04T10:26:16.116Z","severity":null,"assigner":"mitre","products":["n/a n/a"],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":["https://www.acronis.com","https://danishcyberdefence.dk/blog","https://madsjoensen.dk/cve-2020-9451/"],"weaknesses":[],"ingestedAt":"2026-10-29T19:47:47.279Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2020/9xxx/CVE-2020-9451.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2020-9451","state":"PUBLISHED","datePublished":"2021-05-25T11:01:41.000Z","dateUpdated":"2024-08-04T10:26:16.116Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2020-02-28T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","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."}],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":[{"url":"https://www.acronis.com","tags":["x_refsource_MISC"]},{"url":"https://danishcyberdefence.dk/blog","tags":["x_refsource_MISC"]},{"url":"https://madsjoensen.dk/cve-2020-9451/","tags":["x_refsource_MISC"]}],"problemTypes":[{"descriptions":[{"description":"n/a","lang":"en","type":"text"}]}],"providerMetadata":{"shortName":"mitre","dateUpdated":"2021-05-25T11:01:41.000Z","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2020-9451","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","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."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"name":"https://www.acronis.com","refsource":"MISC","url":"https://www.acronis.com"},{"name":"https://danishcyberdefence.dk/blog","refsource":"MISC","url":"https://danishcyberdefence.dk/blog"},{"name":"https://madsjoensen.dk/cve-2020-9451/","refsource":"MISC","url":"https://madsjoensen.dk/cve-2020-9451/"}]}}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://www.acronis.com","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://danishcyberdefence.dk/blog","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://madsjoensen.dk/cve-2020-9451/","tags":["x_refsource_MISC","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T10:26:16.116Z"}}]}}}