Vulnerability identifier: #VU26272

Vulnerability risk: Medium

CVSSv3.1: 4.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:U/RC:C]

CVE-ID: CVE-2019-5135

CWE-ID: CWE-208

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
WAGO PFC100 Controller
Hardware solutions / Firmware
Wago PFC200 Controller
Hardware solutions / Firmware

Vendor: WAGO

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.

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

Vulnerable software versions

WAGO PFC100 Controller: 03.00.39(12)

Wago PFC200 Controller: 03.00.39(12) - 03.01.07(13)

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External links
http://talosintelligence.com/vulnerability_reports/TALOS-2019-0924

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.