XML External Entity injection in c3p0 - CVE-2018-20433

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Main Vulnerability Database Vulnerabilities #VU18784

XML External Entity injection in c3p0 - CVE-2018-20433

Published: June 12, 2019


Vulnerability identifier: #VU18784
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2018-20433
CWE-ID: CWE-611
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: mchange.com
Affected software:
c3p0

Detailed vulnerability description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to insufficient validation of user-supplied XML input within the extractXmlConfigFromInputStream() method in com/mchange/v2/c3p0/cfg/C3P0ConfigXmlUtils.java file during initialization. A remote attacker can pass a specially crafted XML code to the affected application and view contents of arbitrary files on the system or initiate requests to external systems.

Successful exploitation of the vulnerability may allow an attacker to view contents of arbitrary file on the server or perform network scanning of internal and external infrastructure.


How to mitigate CVE-2018-20433

Install updates from vendor's website.

Sources