Path traversal in Advantech WebAccess - CVE-2017-16720

Vulnerability identifier: #VU9891

CSH Severity: Low

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2017-16720

CWE-ID: CWE-121

Exploitation vector: Remote access

Exploit availability: Public exploit is available

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The weakness exists due to path traversal. A remote attacker can bypass security restrictions and gain access to files within the directory structure of the target device.

Advantech WebAccess

Update to version 8.3.

• Exploit #6252 - Advantech WebAccess < 8.3 - Directory Traversal / Remote Code Execution (June 17, 2021)

• https://ics-cert.us-cert.gov/advisories/ICSA-18-004-02

• Multiple vulnerabilities in Advantech WebAccess