CVE-2020-9451

Public Exploit

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.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.04%
Vendor Advisory acronis.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.acronis.com vendor advisory
https://danishcyberdefence.dk/blog third party advisory
https://madsjoensen.dk/cve-2020-9451/ third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2020-9451?
CVE-2020-9451 has been scored as a medium severity vulnerability.
How to fix CVE-2020-9451?
To fix CVE-2020-9451, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-9451 being actively exploited in the wild?
It is possible that CVE-2020-9451 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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