Vulnerability · Published May 25, 2021 · Assigned by mitre
CVE-2020-9451
Medium 5.5
In plain English
A medium-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities).
Official 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.
Affected products (as reported)
References
- https://www.acronis.com x_refsource_MISC
- https://danishcyberdefence.dk/blog x_refsource_MISC
- https://madsjoensen.dk/cve-2020-9451/ x_refsource_MISC