CVE-2018-11091 Information

Description

An issue was discovered in MyBiz MyProcureNet 5.0.0. A malicious file can be uploaded to the webserver by an attacker. It is possible for an attacker to upload a script to issue operating system commands. This vulnerability occurs because an attacker is able to adjust the \HiddenFieldControlCustomWhiteListedExtensions\ parameter and add arbitrary extensions to the whitelist during the upload. For instance if the extension .asp is added to the \HiddenFieldControlCustomWhiteListedExtensions\ parameter the server accepts \secctest.asp\ as a legitimate file. Hence malicious files can be uploaded in order to execute arbitrary commands to take over the server.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Reference

http://packetstormsecurity.com/files/155281/FreeBSD-Security-Advisory-FreeBSD-SA-19-26.mcu.html http://seclists.org/fulldisclosure/2018/May/32 https://seclists.org/bugtraq/2019/Nov/16 https://security.FreeBSD.org/advisories/FreeBSD-SA-19:26.mcu.asc https://www.sec-consult.com/en/blog/advisories/arbitrary-file-upload-cross-site-scripting-in-mybiz-myprocurenet/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.9