Rewterz Threat Advisory – Industrial Control ABB PB610 Panel Builder 600 Multiple Vulnerabilities

Severity

High

Analysis Summary

CVE-2019-7225

The ABB CP635 HMI component implements hidden administrative accounts used during the provisioning phase of the HMI interface. These credentials allow the provisioning tool “Panel Builder 600” to flash a new interface and Tags (MODBUS coils) mapping to the HMI. These credentials are used over both HTTP(S) and FTP. There is no option to disable or change these undocumented credentials.

CVE-2019-7226

The IDAL HTTP server CGI interface contains a URL, which allows an unauthenticated attacker to bypass authentication and gain access to privileged functions.

CVE-2019-7227

The IDAL FTP server fails to ensure directory change requests do not change to locations outside of the root FTP directory. An authenticated attacker can simply traverse outside the server root directory by changing the directory.

CVE-2019-7228

The IDAL HTTP server is vulnerable to memory corruption through insecure use of user supplied format strings. An attacker can abuse this functionality to bypass authentication or execute code on the server.

CVE-2019-7230

The IDAL FTP server is vulnerable to memory corruption through insecure use of user supplied format strings. An attacker can abuse this functionality to bypass authentication or execute code on the server.

CVE-2019-7232

The IDAL HTTP server is vulnerable to a stack-based buffer overflow when a large host header is sent in a HTTP request. The host header value overflows a buffer and can overwrite the Structured Exception Handler (SEH) address with a large chunk of data.

CVE-2019-7231

The IDAL FTP server is vulnerable to a buffer overflow when a large string is sent by an authenticated attacker. This overflow is handled, but terminates the process.

Impact

• Arbitrary code execution
• Unauthorized System access

Affected Vendors

ABB

Affected Products

PB610 Panel Builder 600

Update to version

PB610 Panel Builder 600 v2.8.0.424