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MitreCVE-2021-43042

HistoryDec 06, 2021 - 4:15 a.m.

CVE-2021-43042

2021-12-0604:15:07

CWE-120

mitre

web.nvd.nist.gov

cve-2021-43042

kaseya

unitrends

backup appliance

buffer overflow

remote unauthenticated attacker

nvd

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

9.5

Confidence

High

EPSS

0.016

Percentile

87.7%

JSON

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.

Affected configurations

Nvd

Node

kaseyaunitrends_backupRange10.0–10.5.5

VendorProductVersionCPE
kaseyaunitrends_backup*cpe:2.3:a:kaseya:unitrends_backup:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
kaseya	unitrends_backup	*	cpe:2.3:a:kaseya:unitrends_backup::::::::

References

helpdesk.kaseya.com/hc/en-gb/articles/4412762258961

www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-1

www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-2

Social References

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

9.5

Confidence

High

EPSS

0.016

Percentile

87.7%

JSON

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