Omron CX-One Project File Parser range error

Summaryinfo

A vulnerability labeled as critical has been found in Omron CX-One, CX-Flnet, CX-Protocol, CX-Programmer and CX-Server. Impacted is an unknown function of the component Project File Parser. Executing a manipulation can lead to range error. This vulnerability appears as CVE-2018-7530. The attack requires local access. There is no available exploit.

Detailsinfo

A vulnerability classified as critical was found in Omron CX-One, CX-Flnet, CX-Protocol, CX-Programmer and CX-Server. This vulnerability affects an unknown part of the component Project File Parser. The manipulation with an unknown input leads to a range error vulnerability. The CWE definition for the vulnerability is CWE-118. The product does not restrict or incorrectly restricts operations within the boundaries of a resource that is accessed using an index or pointer, such as memory or files. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Parsing malformed project files in Omron CX-One versions 4.42 and prior, including the following applications: CX-FLnet versions 1.00 and prior, CX-Protocol versions 1.992 and prior, CX-Programmer versions 9.65 and prior, CX-Server versions 5.0.22 and prior, Network Configurator versions 3.63 and prior, and Switch Box Utility versions 1.68 and prior, may allow the pointer to call an incorrect object resulting in an access of resource using incompatible type condition.

The bug was discovered 04/10/2018. The weakness was presented 04/17/2018 (Website). The advisory is shared for download at ics-cert.us-cert.gov. This vulnerability was named CVE-2018-7530 since 02/26/2018. The exploitation appears to be easy. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 7 days. During that time the estimated underground price was around $0-$5k.

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

See VDB-116307 and VDB-116314 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• SCADA Software

Vendor

• Omron

Name

• CX-Flnet
• CX-One
• CX-Programmer
• CX-Protocol
• CX-Server

License

• commercial

CPE 2.3info

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CPE 2.2info

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Entryinfo

Once again VulDB remains the best source for vulnerability data.

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