CVE-2020-16171
CVSS V2 Medium 6.4
CVSS V3 Medium 6.5
Description
An issue was discovered in Acronis Cyber Backup before 12.5 Build 16342. Some API endpoints on port 9877 under /api/ams/ accept an additional custom Shard header. The value of this header is afterwards used in a separate web request issued by the application itself. This can be abused to conduct SSRF attacks against otherwise unreachable Acronis services that are bound to localhost such as the NotificationService on 127.0.0.1:30572.
Overview
- CVE ID
- CVE-2020-16171
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2020-09-21T14:15:13
- Last Modified Date
- 2020-10-01T15:43:15
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:acronis:cyber_backup:*:*:*:*:*:*:*:* | 1 | OR | 12.5 | |
| cpe:2.3:a:acronis:cyber_backup:12.5:-:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:acronis:cyber_backup:12.5:10130:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:acronis:cyber_backup:12.5:10330:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:acronis:cyber_backup:12.5:11010:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:acronis:cyber_backup:12.5:13160:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:acronis:cyber_backup:12.5:13400:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:acronis:cyber_backup:12.5:14280:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:acronis:cyber_backup:12.5:14330:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:acronis:cyber_backup:12.5:16180:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:acronis:cyber_backup:12.5:16318:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:acronis:cyber_backup:12.5:16327:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:acronis:cyber_backup:12.5:7641:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:acronis:cyber_backup:12.5:7970:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:acronis:cyber_backup:12.5:8850:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:acronis:cyber_backup:12.5:9010:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:P/I:P/A:N
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- NONE
- Base Score
- 6.4
- Severity
- MEDIUM
- Exploitability Score
- 10
- Impact Score
- 4.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- LOW
- Availability Impact
- NONE
- Base Score
- 6.5
- Base Severity
- MEDIUM
- Exploitability Score
- 3.9
- Impact Score
- 2.5
References
| Reference URL | Reference Tags |
|---|---|
| http://seclists.org/fulldisclosure/2020/Sep/33 | Exploit Mailing List Third Party Advisory |
| https://www.rcesecurity.com/2020/09/CVE-2020-16171-Exploiting-Acronis-Cyber-Backup-for-Fun-and-Emails/ | Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-16171 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-16171 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 17:11:23 | Added to TrackCVE | |||
| 2022-12-04 23:03:30 | 2020-09-21T14:15Z | 2020-09-21T14:15:13 | CVE Published Date | updated |
| 2022-12-04 23:03:30 | 2020-10-01T15:43:15 | CVE Modified Date | updated | |
| 2022-12-04 23:03:30 | Analyzed | Vulnerability Status | updated |