Arbitrary file upload in Mybiz Myprocurenet
CVE-2018-11091
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.
Vulnerability class: Unrestricted File Upload
EPSS: 0.038 (88.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Mybiz Myprocurenet — versions 5.0.0
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Mailing List, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_FREEBSD, vendor-advisory)
- cve@mitre.org (mailing-list, x_refsource_BUGTRAQ)
- cve@mitre.org (x_refsource_MISC)
Frequently asked questions
- What is CVE-2018-11091?
- CVE-2018-11091 is a critical-severity vulnerability in Mybiz Myprocurenet, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.9/10. Published 2018-05-14.
- How severe is CVE-2018-11091?
- Critical severity. CVSS v3 base score is 9.9 out of 10.
- Is CVE-2018-11091 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.