VinChin Backup & Recovery is an all-in-one backup solution for virtual infrastructures supporting VMWare, KVM, Xen Server, Hyper-V, OpenStack and more. The product also supports AWS, Azure and other cloud providers as backup storage.

VinChin has failed to acknowledge the various requests over a month period, we are thus disclosing the following vulnerabilities:

CVE-2023-45499 - VinChin VMWare Backup 5.0 to 7.0
During our research we discovered an HTTP API exposed by VinChin Backup. This API can be accessed using hard-coded credentials.

CVE-2023-45498 - VinChin VMWare Backup 5.0 to 7.0
While exploring the various functionalities exposed by the API a particular endpoint was found vulnerable to improper input sanitization. A specially crafted payload results in remote code execution allowing the attacker to execute code with the permissions of the web server.


Timeline:
2023-09-22: LeakIX makes initial contact
2023-09-25: VinChin request details
2023-09-25: LeakIX request Safe harbour
2023-09-26: No reply, LeakIX requests update
2023-09-27: No reply, LeakIX sends PoC
2023-09-29: No reply, LeakIX requests feedback
2023-10-05: No reply, LeakIX requests feedback
2023-10-10: No reply, LeakIX requests feedback from alternative email
2023-10-11: No reply, LeakIX requests feedback from another alternative email
2023-10-16: No reply, CVE reserved and vendor notified
2023-10-18: No reply, LeakIX sent 7 day disclosure warning
2023-10-24: LeakIX sends early warning to providers hosting VinChin on their network.
2023-10-26: No reply, Publishing this advisory