CVE-2018-19420 — LOW (3.8) — White Hats Nepal

Vulnerability Description

In GetSimpleCMS 3.3.15, admin/upload.php blocks .html uploads but there are several alternative cases in which HTML can be executed, such as a file with no extension or an unrecognized extension (e.g., the test or test.asdf filename), because of admin/upload-uploadify.php, and validate_safe_file in admin/inc/security_functions.php.

CVSS Score

3.8

LOW

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Get-Simple	Getsimple Cms	3.3.15

Related Weaknesses (CWE)

CWE-434

References

https://github.com/GetSimpleCMS/GetSimpleCMS/issues/1301ExploitThird Party Advisory
https://github.com/GetSimpleCMS/GetSimpleCMS/issues/1301ExploitThird Party Advisory

FAQ

What is CVE-2018-19420?

CVE-2018-19420 is a vulnerability with a CVSS score of 3.8 (LOW). In GetSimpleCMS 3.3.15, admin/upload.php blocks .html uploads but there are several alternative cases in which HTML can be executed, such as a file with no extension or an unrecognized extension (e.g....

How severe is CVE-2018-19420?

CVE-2018-19420 has been rated LOW with a CVSS base score of 3.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-19420?

Check the references section above for vendor advisories and patch information. Affected products include: Get-Simple Getsimple Cms.