Input validation error in OWASP ModSecurity Core Rule Set (CRS) - CVE-2019-13464

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Main Vulnerability Database Vulnerabilities #VU72099

Input validation error in OWASP ModSecurity Core Rule Set (CRS) - CVE-2019-13464

Published: February 9, 2023


Vulnerability identifier: #VU72099
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-13464
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
OWASP ModSecurity Core Rule Set (CRS)
Software vendor:
OWASP

Description

The vulnerability allows a remote attacker to bypass filtration rules.

The vulnerability exists due to an error when using X.Filename instead of X_Filename in some PHP Script Uploads rules, because PHP automatically transforms dots into underscores in certain contexts where dots are invalid. A remote attacker can bypass implemented rules and successfully upload dangerous files on the server.


Remediation

Install updates from vendor's website.

External links