WAGO PFC200 03.02.02(14) iocheckd Service sprintf Crafted Packet os command injection

Summaryinfo

A vulnerability classified as critical has been found in WAGO PFC200 03.02.02(14). This impacts the function sprintf of the component iocheckd Service. The manipulation as part of Crafted Packet leads to os command injection. This vulnerability is referenced as CVE-2019-5175. The attack can only be performed from a local environment. No exploit is available.

Detailsinfo

A vulnerability was found in WAGO PFC200 03.02.02(14). It has been rated as critical. This issue affects the function sprintf of the component iocheckd Service. The manipulation as part of a Crafted Packet leads to a os command injection vulnerability. Using CWE to declare the problem leads to CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An exploitable command injection vulnerability exists in the iocheckd service &acirc;&euro;&tilde;I/O-Check&acirc;&euro;&trade; function of the WAGO PFC 200 Firmware version 03.02.02(14). A specially crafted XML cache file written to a specific location on the device can be used to inject OS commands. An attacker can send a specially crafted packet to trigger the parsing of this cache file.At 0x1ea28 the extracted type value from the xml file is used as an argument to /etc/config-tools/config_interfaces interface=X1 state=enabled config-type=<contents of type node> using sprintf(). This command is later executed via a call to system().

The weakness was published 03/11/2020. The identification of this vulnerability is CVE-2019-5175 since 01/04/2019. The exploitation is known to be easy. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1202 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Similar entries are available at VDB-151329, VDB-151328, VDB-151327 and VDB-151326. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• WAGO

Name

• PFC200

Version

• 03.02.02(14)

License

• commercial

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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