SB2021040902 - Multiple vulnerabilities in NEC Corporation Aterm WF1200CR, WG1200CR, WG2600HS and WX3000HP
Published: April 9, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 secuirty vulnerabilities.
1) OS Command Injection (CVE-ID: CVE-2021-20708)
The vulnerability allows a remote user to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation. A remote administrator on the local network can pass specially crafted data to the application and execute arbitrary OS commands on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
2) Improper validation of integrity check value (CVE-ID: CVE-2021-20709)
The vulnerability allows a remote user to compromise the target system.
The vulnerability exists due to improper integrity check. A remote administrator on the local network can send a specially crafted request and execute arbitrary commands on the system.
3) Cross-site scripting (CVE-ID: CVE-2021-20710)
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. 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.
4) OS Command Injection (CVE-ID: CVE-2021-20711)
The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation. A remote attacker on the local network can pass specially crafted data to the application and execute arbitrary OS commands on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
5) Improper access control (CVE-ID: CVE-2021-20712)
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions in the IPv6 firewall function. A remote attacker can access devices connected to the LAN side from the WAN side.
Remediation
Install update from vendor's website.