admin3 through 3.0.0 fails to sanitize client-supplied filenames in the upload handler, allowing authenticated users to write files outside the storage root on Windows deployments. Attackers can use dot-dot path segments in filenames to escape the configured storage directory and overwrite arbitrary files accessible to the server process.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products
cjbi:admin3
References 5
https://github.com/LinYuanyi1/cve-request-poc/blob/master/admin3/C03_storage_pa…
admin3 - path traversal write through the storage upload filename (PoC)
https://github.com/cjbi/admin3/blob/3.0.0/admin3-server/src/main/java/tech/wete…
LocalStorage.java at 3.0.0
https://github.com/cjbi/admin3/blob/3.0.0/admin3-server/src/main/java/tech/wete…
StorageServiceImpl.java at 3.0.0
https://github.com/cjbi/admin3
Product
https://www.vulncheck.com/advisories/admin3-through-3.0.0-arbitrary-file-write-…
VulnCheck Advisory: admin3 through 3.0.0 Arbitrary File Write via Path Traversal in Storage Upload Filename