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CVE-2018-19420

Good to know:

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Date: October 3, 2022

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.

Language: PHP

Severity Score

Related Resources (3)

https://nvd.nist.gov/vuln/detail/CVE-2018-19420
https://github.com/GetSimpleCMS/GetSimpleCMS/issues/1301
https://www.mend.io/vulnerability-database/CVE-2018-19420

Severity Score

Weakness Type (CWE)

Unrestricted Upload of File with Dangerous Type

CWE-434

Top Fix

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CVSS v3

Base Score:
Attack Vector (AV):
Attack Complexity (AC):
Privileges Required (PR):
User Interaction (UI):
Scope (S):
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV):
Access Complexity (AC):
Authentication (AU):
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE
Additional information:

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