Information Exposure Through Timing Discrepancy in WAGO PFC100 Controller and Wago PFC200 Controller - CVE-2019-5135

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Main Vulnerability Database Vulnerabilities #VU26272

Information Exposure Through Timing Discrepancy in WAGO PFC100 Controller and Wago PFC200 Controller - CVE-2019-5135

Published: March 20, 2020


Vulnerability identifier: #VU26272
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-2019-5135
CWE-ID: CWE-208
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: WAGO
Affected software:
WAGO PFC100 Controller
Wago PFC200 Controller

Detailed vulnerability description

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

The vulnerability exists due to the an exploitable timing discrepancy issue in the authentication functionality of the Web-Based Management (WBM) web application. A remote attacker can exploit the PHP "crypt()" function and disclose hashed user credentials.


How to mitigate CVE-2019-5135

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Sources