PT-2020-11088 · Wago · Wago Pfc 200
Kelly Leuschner
·
Published
2020-03-11
·
Updated
2020-03-17
·
CVE-2019-5169
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
WAGO PFC 200 Firmware version 03.02.02(14)
Description
A command injection issue exists in the iocheckd service 'I/O-Check' function. This is due to the improper handling of a specially crafted XML cache file, which can be used to inject OS commands. An attacker can trigger the parsing of this cache file by sending a specially crafted packet. The extracted gateway value from the XML file is used as an argument to the command
/etc/config-tools/config default gateway with parameters number=0, state=enabled, and value=<contents of gateway node>, using sprintf(). This command is later executed via a call to system().Recommendations
For WAGO PFC 200 Firmware version 03.02.02(14), consider disabling the 'I/O-Check' function in the iocheckd service until a patch is available. Restrict access to the XML cache file to minimize the risk of exploitation. Avoid using the
gateway node in the XML file until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.Exploit
OS Command Injection
Found an issue in the description? Have something to add? Feel free to write us 👾
Weakness Enumeration
Related Identifiers
Affected Products
Wago Pfc 200