CVE-2021-43043

Public Exploit

Description

An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. The apache user could read arbitrary files such as /etc/shadow by abusing an insecure Sudo rule.

6.5

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.48%

Vendor Advisory kaseya.com

Affected: n/a n/a

References

Link	Tags
https://helpdesk.kaseya.com/hc/en-gb/articles/4412762258961	vendor advisory
https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-1	third party advisory exploit
https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-2	third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-43043?: CVE-2021-43043 has been scored as a medium severity vulnerability.
How to fix CVE-2021-43043?: To fix CVE-2021-43043, 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-2021-43043 being actively exploited in the wild?: It is possible that CVE-2021-43043 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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