CVE-2021-43042

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-43042
An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. A buffer overflow existed in the vaultServer component. This was exploitable by a remote unauthenticated attacker.

9.8 /10

CVSS v3 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5 /10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References
Link 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
Configurations

Configuration 1 (hide)

cpe:2.3:a:kaseya:unitrends_backup:*:*:*:*:*:*:*:*
History

21 Nov 2024, 06:28

Type Values Removed Values Added
References () https://helpdesk.kaseya.com/hc/en-gb/articles/4412762258961 - Vendor Advisory () https://helpdesk.kaseya.com/hc/en-gb/articles/4412762258961 - Vendor Advisory
References () 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-1 - Exploit, Third Party Advisory
References () https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-2 - Exploit, Third Party Advisory () https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-2 - Exploit, Third Party Advisory

28 Nov 2022, 21:19

Type Values Removed Values Added
References (MISC) https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-1 - (MISC) https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-1 - Exploit, Third Party Advisory
References (MISC) https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-2 - (MISC) https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-2 - Exploit, Third Party Advisory

23 Nov 2022, 19:15

Type Values Removed Values Added
References
  • (MISC) https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-1 -
  • (MISC) https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-2 -

06 Dec 2021, 17:08

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : 7.5
v3 : 9.8
References (MISC) https://helpdesk.kaseya.com/hc/en-gb/articles/4412762258961 - (MISC) https://helpdesk.kaseya.com/hc/en-gb/articles/4412762258961 - Vendor Advisory
CPE cpe:2.3:a:kaseya:unitrends_backup:*:*:*:*:*:*:*:*
CWE CWE-120

06 Dec 2021, 04:15

Type Values Removed Values Added
New CVE
Information

Published : 2021-12-06 04:15

Updated : 2024-11-21 06:28

NVD link : CVE-2021-43042

Mitre link : CVE-2021-43042

CVE.ORG link : CVE-2021-43042

JSON object : View

Products Affected

kaseya

  • unitrends_backup
CWE
CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')