CVE-2020-9452 (GCVE-0-2020-9452)

Vulnerability from cvelistv5 – Published: 2021-05-25 11:21 – Updated: 2024-08-04 10:26
VLAI
Summary
An issue was discovered in Acronis True Image 2020 24.5.22510. anti_ransomware_service.exe includes functionality to quarantine files by copying a suspected ransomware file from one directory to another using SYSTEM privileges. Because unprivileged users have write permissions in the quarantine folder, it is possible to control this privileged write with a hardlink. This means that an unprivileged user can write/overwrite arbitrary files in arbitrary folders. Escalating privileges to SYSTEM is trivial with arbitrary writes. While the quarantine feature is not enabled by default, it can be forced to copy the file to the quarantine by communicating with anti_ransomware_service.exe through its REST API.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • n/a
Assigner
mitre CNA under the mitre root
CNA scorecard E 29/100 over 2132 records in the last 180 days details
References
URL Tags
https://www.acronis.com x_refsource_MISC
https://danishcyberdefence.dk/blog x_refsource_MISC
https://madsjoensen.dk/cve-2020-9452/ x_refsource_MISC
Show details on NVD website
To clipboard 

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