PT-2020-11094 · Wago · Wago Pfc 200
Kelly Leuschner
·
Published
2020-03-11
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Updated
2020-03-17
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CVE-2019-5175
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 parsing 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 vulnerability involves the use of the extracted type value from the XML file as an argument to the
/etc/config-tools/config interfaces interface, which is later executed via a call to system(). The config-type parameter is set to the contents of the type node, using sprintf().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
config-type parameter in the /etc/config-tools/config interfaces interface until the issue is resolved.Exploit
Fix
OS Command Injection
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Weakness Enumeration
Related Identifiers
Affected Products
Wago Pfc 200