SB2018111205 - Multiple vulnerabilities in Advantech WebAccess

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Path traversal (CVE-ID: CVE-2018-15705)

The vulnerability allows a remote attacker to overwrite arbitrary file on the system.

The vulnerability exists due to input validation error when processing directory traversal sequences in WADashboard API. A remote authenticated attacker can send a specially crafted HTTP request to the writeFile API and overwrite arbitrary files on the system.

2) Path traversal (CVE-ID: CVE-2018-15706)

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in WADashboard API. A remote attacker can send a specially crafted HTTP request to readFile API and read arbitrary files on the system.

3) Cross-site scripting (CVE-ID: CVE-2018-15707)

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in Bwmainleft.asp. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Remediation

Install update from vendor's website.

References

• https://www.exploit-db.com/exploits/45774/
• https://www.tenable.com/security/research/tra-2018-35