#VU34383 Arbitrary file upload in GWTUpload - CVE-2020-13128
Published: May 18, 2020 / Updated: August 8, 2020
Vulnerability identifier: #VU34383
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-13128
CWE-ID: CWE-434
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
GWTUpload
GWTUpload
Software vendor:
Manuel Carrasco Moñino
Manuel Carrasco Moñino
Description
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
An issue was discovered in Manolo GWTUpload 1.0.3. server/UploadServlet.java (the servlet for handling file upload) accepts a delay parameter that causes a thread to sleep. It can be abused to cause all of a server's threads to sleep, leading to denial of service.
Remediation
Install update from vendor's website.