Access Control Vulnerability in Allen Bradley Micrologix 1400 Series B FRN 21.2 and Earlier: Unauthorized Disclosure and Modification

CVE-2017-14472 · HIGH Severity

AV:N/AC:L/AU:N/C:P/I:P/A:P

An exploitable access control vulnerability exists in the data, program, and function file permissions functionality of Allen Bradley Micrologix 1400 Series B FRN 21.2 and before. A specially crafted packet can cause a read or write operation resulting in disclosure of sensitive information, modification of settings, or modification of ladder logic. An attacker can send unauthenticated packets to trigger this vulnerability. Required Keyswitch State: Any Description: Requests a specific set of bytes from an undocumented data file and returns the ASCII version of the master password.

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