Rewterz Threat Advisory – Advantech WebAccess Multiple Vulnerabilities

Severity

High

Analysis Summary

CVE-2019-13558

An exploit executed over the network may cause improper control of generation of code, which may allow remote code execution, data exfiltration, or cause a system crash.

CVE-2019-13552

Multiple command injection vulnerabilities are caused by a lack of proper validation of user-supplied data and may allow arbitrary file deletion and remote code execution.

CVE-2019-13556

Multiple stack-based buffer overflow vulnerabilities are caused by a lack of proper validation of the length of user-supplied data. Exploitation of these vulnerabilities may allow remote code execution.

CVE-2019-13550

An improper authorization vulnerability may allow an attacker to disclose sensitive information, cause improper control of generation of code, which may allow remote code execution or cause a system crash.

Impact

• Remote code execution
• System crash

Affected Vendors

Advantech

Affected Products

WebAccess Versions 8.4.1 and prior

Remediation

Update to version 8.4.2

https://support.advantech.com/support/DownloadSRDetail_New.aspx?SR_ID=1-MS9MJV&Doc_Source=Download