CVE-2021-43042
CVSS V2 High 7.5
CVSS V3 Critical 9.8
Description
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.
Overview
- CVE ID
- CVE-2021-43042
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2021-12-06T04:15:07
- Last Modified Date
- 2022-11-28T21:19:02
Weakness Enumerations
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:N/AC:L/Au:N/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 7.5
- Severity
- HIGH
- Exploitability Score
- 10
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 9.8
- Base Severity
- CRITICAL
- Exploitability Score
- 3.9
- 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-2021-43042 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43042 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 06:42:56 | Added to TrackCVE | |||
| 2022-12-06 03:00:29 | 2021-12-06T04:15Z | 2021-12-06T04:15:07 | CVE Published Date | updated |
| 2022-12-06 03:00:29 | 2022-11-28T21:19:02 | CVE Modified Date | updated | |
| 2022-12-06 03:00:29 | Analyzed | Vulnerability Status | updated | |
| 2022-12-06 03:00:34 | References | updated |