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

Summaryinfo

A vulnerability identified as critical has been detected in WAGO PFC200 03.02.02(14). Impacted is the function sprintf of the component iocheckd Service. This manipulation as part of Crafted Packet causes os command injection. This vulnerability is handled as CVE-2019-5171. It is possible to launch the attack on the local host. There is not any exploit available.

Detailsinfo

A vulnerability has been found in WAGO PFC200 03.02.02(14) and classified as critical. Affected by this vulnerability is the function sprintf of the component iocheckd Service. The manipulation as part of a Crafted Packet leads to a os command injection vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect 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). An attacker can send specially crafted packet at 0x1ea48 to the extracted hostname value from the xml file that is used as an argument to /etc/config-tools/config_interfaces interface=X1 state=enabled ip-address=<contents of ip node> using sprintf().

The weakness was released 03/12/2020. This vulnerability is known as CVE-2019-5171 since 01/04/2019. The exploitation appears to be easy. An attack has to be approached locally. The exploitation doesn't need any form of authentication. 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.

Entries connected to this vulnerability are available at VDB-151325, VDB-151324, VDB-151323 and VDB-151322. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• WAGO

Name

• PFC200

Version

• 03.02.02(14)

License

• commercial

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion