CVE-2021-43037

CVSS V2 Medium 6.9 CVSS V3 High 7.8
Description
An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. The Unitrends Windows agent was vulnerable to DLL injection and binary planting due to insecure default permissions. This allowed privilege escalation from an unprivileged user to SYSTEM.
Overview
  • CVE ID
  • CVE-2021-43037
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-12-06T04:15:07
  • Last Modified Date
  • 2022-11-28T21:40:52
Weakness Enumerations
CWE URL
CWE-427 http://cwe.mitre.org/data/definitions/427.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:kaseya:unitrends_backup:*:*:*:*:*:*:*:* 1 OR 10.0 10.5.5
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:M/Au:N/C:C/I:C/A:C
  • Access Vector
  • LOCAL
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 6.9
  • Severity
  • MEDIUM
  • Exploitability Score
  • 3.4
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • REQUIRED
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 7.8
  • Base Severity
  • HIGH
  • Exploitability Score
  • 1.8
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
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
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-43037
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43037
History
Created Old Value New Value Data Type Notes
2022-05-10 06:42:57 Added to TrackCVE
2022-12-06 03:00:03 2021-12-06T04:15Z 2021-12-06T04:15:07 CVE Published Date updated
2022-12-06 03:00:03 2022-11-28T21:40:52 CVE Modified Date updated
2022-12-06 03:00:03 Analyzed Vulnerability Status updated
2022-12-06 03:00:08 References updated