PT-2020-13345 · Manolo · Gwtupload

Michał Dardas · Published 2020-05-17 · Updated 2020-05-19 · CVE-2020-13128

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Manolo GWTUpload version 1.0.3

Description An issue was discovered in the server/UploadServlet.java, which is the servlet for handling file upload. It accepts a delay parameter that causes a thread to sleep. This can be abused to cause all of a server's threads to sleep, leading to denial of service.

Recommendations For Manolo GWTUpload version 1.0.3, consider disabling the delay parameter in the UploadServlet.java to prevent abuse. As a temporary workaround, restrict access to the UploadServlet.java to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Unrestricted File Upload

Weakness Enumeration

CWE-434

Related Identifiers

CVE-2020-13128

Affected Products

Gwtupload

References · 5

• 🔥 https://github.com/manolo/gwtupload/issues/33 · Exploit
• 🔥 https://logicaltrust.net/blog/2020/02/gwt-upload.html · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2020-13128 · Security Note
• https://osv.dev/vulnerability/CVE-2020-13128 · Vendor Advisory
• https://t.me/cvenotify/3871 · Telegram Post