CVE-2021-43040
Kaseya Unitrends Backup Appliance Privilege Escalation Vulnerability
Description
An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. The privileged vaultServer could be leveraged to create arbitrary writable files, leading to privilege escalation.
INFO
Published Date :
Dec. 6, 2021, 4:15 a.m.
Last Modified :
Nov. 21, 2024, 6:28 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] |
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-43040.
| URL | Resource |
|---|---|
| https://helpdesk.kaseya.com/hc/en-gb/articles/4412762258961 | Vendor Advisory |
| https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-1 | Exploit Third Party Advisory |
| https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-2 | Exploit Third Party Advisory |
| https://helpdesk.kaseya.com/hc/en-gb/articles/4412762258961 | Vendor Advisory |
| https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-1 | Exploit Third Party Advisory |
| https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-2 | Exploit Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-43040 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-43040
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-43040 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-43040 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://helpdesk.kaseya.com/hc/en-gb/articles/4412762258961 Added Reference https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-1 Added Reference https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-2 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Nov. 28, 2022
Action Type Old Value New Value Changed Reference Type https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-2 No Types Assigned https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-2 Exploit, Third Party Advisory -
CVE Modified by [email protected]
Nov. 23, 2022
Action Type Old Value New Value Added Reference https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-2 [No Types Assigned] -
Modified Analysis by [email protected]
Sep. 23, 2022
Action Type Old Value New Value Changed Reference Type https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-1 No Types Assigned https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-1 Exploit, Third Party Advisory -
CWE Remap by [email protected]
Jul. 12, 2022
Action Type Old Value New Value Changed CWE CWE-269 NVD-CWE-noinfo -
CVE Modified by [email protected]
May. 13, 2022
Action Type Old Value New Value Added Reference https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-1 [No Types Assigned] -
Initial Analysis by [email protected]
Dec. 06, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://helpdesk.kaseya.com/hc/en-gb/articles/4412762258961 No Types Assigned https://helpdesk.kaseya.com/hc/en-gb/articles/4412762258961 Vendor Advisory Added CWE NIST CWE-269 Added CPE Configuration OR *cpe:2.3:a:kaseya:unitrends_backup:*:*:*:*:*:*:*:* versions from (including) 10.0 up to (excluding) 10.5.5
Vulnerability Scoring Details
Base CVSS Score: 8.8
Base CVSS Score: 6.5
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.44 }} 0.04%
score
0.62056
percentile