CVE-2021-36121 — HIGH (8.8)

Vulnerability Description

An issue was discovered in Echo ShareCare 8.15.5. The file-upload feature in Access/DownloadFeed_Mnt/FileUpload_Upd.cfm is susceptible to an unrestricted upload vulnerability via the name1 parameter, when processing remote input from an authenticated user, leading to the ability for arbitrary files to be written to arbitrary filesystem locations via ../ Directory Traversal on the Z: drive (a hard-coded drive letter where ShareCare application files reside) and remote code execution as the ShareCare service user (NT AUTHORITY\SYSTEM).

CVSS Score

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Echobh	Sharecare	8.15.5

Related Weaknesses (CWE)

CWE-434

References

https://github.com/atredispartners/advisories/blob/master/ATREDIS-2021-0001.mdThird Party Advisory
https://github.com/atredispartners/advisories/blob/master/ATREDIS-2021-0001.mdThird Party Advisory

FAQ

What is CVE-2021-36121?

CVE-2021-36121 is a vulnerability with a CVSS score of 8.8 (HIGH). An issue was discovered in Echo ShareCare 8.15.5. The file-upload feature in Access/DownloadFeed_Mnt/FileUpload_Upd.cfm is susceptible to an unrestricted upload vulnerability via the name1 parameter, ...

How severe is CVE-2021-36121?

CVE-2021-36121 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-36121?

Check the references section above for vendor advisories and patch information. Affected products include: Echobh Sharecare.