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CVE-2018-11091

9.9 · CRITICAL

An issue was discovered in MyBiz MyProcureNet 5.0.0.

Published May 14, 2018CWE-434EPSS 3.75%

Overview

CVE-2018-11091 is a critical-severity vulnerability. It was published on May 14, 2018 and has a CVSS 3.1 base score of 9.9 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.9, rated CRITICAL. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refpacketstormsecurity.com/files/155281/FreeBSD-Security-Advisory-FreeBSD-SA-19-26.mcu.htmlRefseclists.org/fulldisclosure/2018/May/32Refseclists.org/bugtraq/2019/Nov/16Refsecurity.FreeBSD.org/advisories/FreeBSD-SA-19:26.mcu.ascRefwww.sec-consult.com/en/blog/advisories/arbitrary-file-upload-cross-site-scripting-in-mybiz-myprocurenet/Refpacketstormsecurity.com/files/155281/FreeBSD-Security-Advisory-FreeBSD-SA-19-26.mcu.htmlRefseclists.org/fulldisclosure/2018/May/32Refseclists.org/bugtraq/2019/Nov/16Refsecurity.FreeBSD.org/advisories/FreeBSD-SA-19:26.mcu.ascRefwww.sec-consult.com/en/blog/advisories/arbitrary-file-upload-cross-site-scripting-in-mybiz-myprocurenet/

How CyberStrike helps

Frequently asked questions

What is CVE-2018-11091?

CVE-2018-11091 is a critical-severity vulnerability. It was published on May 14, 2018 and has a CVSS 3.1 base score of 9.9 (CRITICAL).

How severe is CVE-2018-11091?

This vulnerability has a CVSS 3.1 base score of 9.9, rated CRITICAL. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2018-11091?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2018-11091?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-11091 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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