Signature Detail

APP: Rockwell Automation RSLinx Classic Forward Open Electronic Key Stack Buffer Overflow

This signature detects attempts to exploit a known vulnerability against Rockwell Automation RSLinx Classic. The vulnerability is due to a flaw in the module that processes CIP SendRRData messages with overly large size field within the Electronic Key segment in the Connection Path. A remote unauthenticated attacker can exploit this vulnerability by sending a specially crafted packet to the vulnerable service. Successful exploitation could lead to buffer overflow or crash of the vulnerable application.

Extended Description

A vulnerability was found in Rockwell Automation RSLinx Classic versions 4.10.00 and prior. An input validation issue in a .dll file of RSLinx Classic where the data in a Forward Open service request is passed to a fixed size buffer, allowing an attacker to exploit a stack-based buffer overflow condition.

Affected Products

• Rockwellautomation rslinx 4.10.00

References

• CVE: CVE-2019-6553