FL MGUARD, TC MGUARD, TC ROUTER and TC CLOUD CLIENT devices are affected by a buffer overflow vulnerability within the PPP service.

The PPP service is not active by default, but is used commonly at TC ROUTER, TC CLOUD CLIENT.
It is also running in the following FL MGUARD and TC MGUARD configurations:

• Mobile data connection
• Router mode “Modem”
• Router mode “PPPoE”
• L2TP over IPsec

Malicious PPP peers could try to exploit the vulnerability from remote.

If the software runs as a service, a user with limited access can gain administrator privileges by starting a shell with administrator rights from the Import / Export configuration dialog.

The Phoenix Contact application ‘PC WORX SRT’ is installed as service. The installation path of the application is configured to have insecure permissions which allows any unprivileged user to write arbitrary files to the installation directory where all the configuration files and binaries of the service are located.

Multiple Vulnerabilities exist in components used by the aforementioned products. See CVE-Details for more information.

CVS-2019-12255

Wind River VxWorks has a Buffer Overflow in the TCP component (issue 1 of 4). This is an IPNET security vulnerability: TCP Urgent Pointer = 0 that leads to an integer underflow.

The vulnerability affects a little-known feature of the TCP/IP protocol, sending out-of-band data, also known as urgent data. Although the feature is rarely used in the real world, its implementation, consisting of an “Urgent Flag” and an “Urgent Pointer”, is present in the header of every TCP packet. Exploiting these vulnerabilities does therefore not depend on any specific configuration. If a VxWorks device communicates using the TCP protocol, it is vulnerable. It also does not matter which side initiates a TCP connection. An attacker can exploit the vulnerabilities if the VxWorks device is operated as a server that accepts TCP connections, if the VxWorks device connects to a malicious host operated by the attacker, or as a man-in-the-middle, manipulating a TCP connection between the VxWorks device and a legitimate host.

CVE-2019-12258

This vulnerability affects established TCP sessions. An attacker who can figure out the source and destination TCP port and IP addresses of a session can inject invalid TCP segments into the flow, causing the TCP session to be reset.

Phoenix Contact Emalytics Controller ILC 2050 BI are developed and designed for the use in protected building automation networks.
An issue was discovered on Phoenix Contact Emalytics Controller ILC 2050 BI before 1.2.3 and BI-L before 1.2.3 devices. There is an insecure mechanism for read and write access to the configuration of the device. The mechanism can be discovered by examining a link on the website of the device.

If MAC-based port security or 802.1x port security is enabled, the FL NAT 2xxx will unintentionally grant access to unauthorized devices in case of routed transmission.

Subnet 2---(Ports belonging to subnet 2)
                  |
             FL NAT 2xxx
                  |
            (Ports belonging to subnet 1, port sec ON)---- 2nd device
                                                        |
                                                        -- unauthorized device

The unauthorized device can access other devices in subnet 2 but cannot access the 2nd device in subnet 1

Manipulated PC Worx or Config+ projects could lead to a remote code execution due to
insufficient input data validation.
The attacker needs to get access to an original PC Worx or Config+ project to be able to
manipulate data inside the project folder. After manipulation the attacker needs to exchange the
original files by the manipulated ones on the application programming workstation.