CVE-2019-5149 — HIGH (7.5) — White Hats Nepal

Vulnerability Description

The WBM web application on firmwares prior to 03.02.02 and 03.01.07 on the WAGO PFC100 and PFC2000, respectively, runs on a lighttpd web server and makes use of the FastCGI module, which is intended to provide high performance for all Internet applications without the penalties of Web server APIs. However, the default configuration of this module appears to limit the number of concurrent php-cgi processes to two, which can be abused to cause a denial of service of the entire web server. This affects WAGO PFC200 Firmware version 03.00.39(12) and version 03.01.07(13), and WAGO PFC100 Firmware version 03.00.39(12) and version 03.02.02(14).

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Wago	Pfc200 Firmware	03.00.39\(12\)
Wago	Pfc200	-
Wago	Pfc100 Firmware	03.00.39\(12\)
Wago	Pfc100	-

Related Weaknesses (CWE)

CWE-400

References

https://talosintelligence.com/vulnerability_reports/TALOS-2019-0939ExploitThird Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2019-0939ExploitThird Party Advisory

FAQ

What is CVE-2019-5149?

CVE-2019-5149 is a vulnerability with a CVSS score of 7.5 (HIGH). The WBM web application on firmwares prior to 03.02.02 and 03.01.07 on the WAGO PFC100 and PFC2000, respectively, runs on a lighttpd web server and makes use of the FastCGI module, which is intended t...

How severe is CVE-2019-5149?

CVE-2019-5149 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2019-5149?

Check the references section above for vendor advisories and patch information. Affected products include: Wago Pfc200 Firmware, Wago Pfc200, Wago Pfc100 Firmware, Wago Pfc100.