medium6.5Public exploit code
CVE-2020-16171
An issue was discovered in Acronis Cyber Backup before 12.5 Build 16342.
Public exploit code
Working exploit or proof of concept code has been published for this vulnerability. Treat unpatched systems as at risk.
- Acronis Cyber Backup 12.5 Build 16341 - Unauthenticated SSRF2020-11-27 · webapps · multiple
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Acronis | Cyber Backup | through 12.5 Version 12.5 |
Weakness classification
References
- NVD record
- CVE.org record
- http://seclists.org/fulldisclosure/2020/Sep/33
- https://www.rcesecurity.com/2020/09/CVE-2020-16171-Exploiting-Acronis-Cyber-Backup-for-Fun-and-Emails/
- http://seclists.org/fulldisclosure/2020/Sep/33
- https://www.rcesecurity.com/2020/09/CVE-2020-16171-Exploiting-Acronis-Cyber-Backup-for-Fun-and-Emails/