Path traversal in Backup by Supsystic - #VU50625
Published: February 11, 2021
Vulnerability identifier: #VU50625
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: N/A
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: supsystic.com
Affected software:
Backup by Supsystic
Backup by Supsystic
Detailed vulnerability description
The vulnerability allows a remote user to delete arbitrary files on the server.
The vulnerability exists due to input validation error when processing directory traversal sequences passed via the "filename" parameter. A remote user can send a specially crafted HTTP request and delete arbitrary files on the system.
Note, the vulnerability can be exploited via CSRF attack vector.
Remediation
Install updates from vendor's website.