PT-2017-14568 · Cms Made Simple · Cms Made Simple

Bsmali4 · Published 2017-11-12 · Updated 2019-11-21 · CVE-2017-16798

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions CMS Made Simple version 2.2.3.1

Description The issue allows remote attackers to bypass intended access restrictions or trigger XSS via certain file extensions. This is because the is file acceptable function in modules/FileManager/action.upload.php only blocks file extensions that begin or end with a "php" substring, making other extensions such as .phtml, .pht, .html, or .svg vulnerable to exploitation.

Recommendations For CMS Made Simple version 2.2.3.1, consider restricting the upload of files with potentially executable or malicious extensions as a temporary workaround until a patch is available. Avoid using the is file acceptable function in modules/FileManager/action.upload.php without additional validation to minimize the risk of exploitation.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2017-16798

Affected Products

Cms Made Simple

References · 3

• 🔥 https://github.com/bsmali4/cve/blob/master/CMS%20Made%20Simple%20UPLOAD%20FILE%20XSS.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2017-16798 · Security Note
• https://osv.dev/vulnerability/CVE-2017-16798 · Vendor Advisory