CVE-2018-7497

Vulnerability

Multiple untrusted pointer dereference vulnerabilities exist in Advantech WebAccess versions V8.2_20170817 and prior, V8.3.0 and prior, WebAccess Dashboard V.2.0.15 and prior, WebAccess Scada Node prior to 8.3.1, and WebAccess/NMS 2.0.3 and prior. These flaws occur when the application dereferences a pointer from an untrusted source without proper validation, leading to potential arbitrary code execution [1].

Exploitation

An attacker can exploit these vulnerabilities remotely over the network without authentication or user interaction, requiring low skill level. By sending specially crafted requests to vulnerable WebAccess services, the attacker triggers the untrusted pointer dereference, potentially achieving code execution [1].

Impact

Successful exploitation allows an attacker to execute arbitrary code on the affected system, disclose sensitive information, or delete files. This can lead to full compromise of the target device and potential lateral movement within the network [1].

Mitigation

As of the CISA advisory (ICSA-18-135-01) dated May 15, 2018, no patch has been released for these vulnerabilities. Users should monitor vendor updates and apply defense-in-depth measures such as network segmentation and restricting access to trusted hosts [1].