Privilege Escalation Vulnerability in Kaseya Unitrends Backup Appliance
CVE-2021-43040

8.8HIGH

Key Information:

Vendor

Kaseya

Status
Unitrends Backup
Vendor
CVE Published:
6 December 2021

What is CVE-2021-43040?

A security vulnerability exists in the Kaseya Unitrends Backup Appliance versions prior to 10.5.5, where the privileged vaultServer component can be exploited. This could allow attackers to create arbitrary writable files on the system, resulting in potential privilege escalation. Such an exploit could lead to unauthorized access and manipulation of sensitive data, posing a significant risk to the integrity and security of the affected environment.

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References

https://helpdesk.kaseya.com/hc/en-gb/articles/4412762258961
https://www.cyberonesecurity.com/blog/exploiting-kaseya-u...
https://www.cyberonesecurity.com/blog/exploiting-kaseya-u...

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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