CVE-2017-16798 — MEDIUM (5.4)

Vulnerability Description

In CMS Made Simple 2.2.3.1, the is_file_acceptable function in modules/FileManager/action.upload.php only blocks file extensions that begin or end with a "php" substring, which allows remote attackers to bypass intended access restrictions or trigger XSS via other extensions, as demonstrated by .phtml, .pht, .html, or .svg.

CVSS Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Cmsmadesimple	Cms Made Simple	2.2.3.1

Related Weaknesses (CWE)

CWE-79

References

https://github.com/bsmali4/cve/blob/master/CMS%20Made%20Simple%20UPLOAD%20FILE%2Issue TrackingThird Party Advisory
https://github.com/bsmali4/cve/blob/master/CMS%20Made%20Simple%20UPLOAD%20FILE%2Issue TrackingThird Party Advisory

FAQ

What is CVE-2017-16798?

CVE-2017-16798 is a vulnerability with a CVSS score of 5.4 (MEDIUM). In CMS Made Simple 2.2.3.1, the is_file_acceptable function in modules/FileManager/action.upload.php only blocks file extensions that begin or end with a "php" substring, which allows remote attackers...

How severe is CVE-2017-16798?

CVE-2017-16798 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2017-16798?

Check the references section above for vendor advisories and patch information. Affected products include: Cmsmadesimple Cms Made Simple.