CVE-2021-44620
CriticalCVSS 9.8Exploitation Probability (EPSS)
Elevated risk71th percentile - higher than 71% of all known CVEs
Summary
A command injection vulnerability exists in TOTOLINK A3100R up to version V4.1.2cu.5050_B20200504 in the adm/ntm.asp script via the hosTime parameter. It allows a remote attacker to execute arbitrary system commands on the device.
Risk Assessment
An attacker can gain full control over the router, modify its configuration, intercept network traffic, or use it as a pivot point for further attacks within the internal network.
Recommendation
Immediately update the firmware of the TOTOLINK A3100R device to the latest available version that fixes this vulnerability. If no update is available, restrict administrative panel access to trusted IP addresses only.
Other vulnerabilities in TOTOLINK A3100R
See all- CVE-2021-46009Critical
In Totolink A3100R V5.9c.4577, multiple pages can be read without authentication using curl or Burp Suite. Additionally, admin configurations can be set without requiring cookies.
- CVE-2021-46007Critical
The Totolink A3100R router with firmware version V5.9c.4577 is vulnerable to OS command injection. The ping function in the admin panel does not properly filter special characters, allowing an attacker to execute arbitrary commands.
- CVE-2021-46006Medium
In Totolink A3100R firmware version V5.9c.4577, the test.asp file exposes an unauthenticated API-like function. This allows an attacker to modify multiple device settings without any authentication.
- CVE-2022-29641High
TOTOLINK A3100R routers with firmware versions V4.1.2cu.5050_B20200504 and V4.1.2cu.5247_B20211129 were found to have a stack overflow vulnerability. The issue occurs in the setParentalRules function via the startTime and endTime parameters, allowing an attacker to cause a Denial of Service (DoS) through a crafted POST request.
- CVE-2021-46010High
The Totolink A3100R router with firmware version V5.9c.4577 suffers from a vulnerability due to the use of insufficiently random values in the web configuration. The SESSION_ID is predictable, allowing an attacker to hijack a valid session and conduct further malicious operations.
- CVE-2021-46008High
In the Totolink A3100R router with firmware version V5.9c.4577, a hard-coded Telnet password was discovered that can be extracted from the official firmware release. An attacker connected to the Wi-Fi can easily gain root shell access via Telnet if the service is enabled.
Original NVD description (English source)
A Command Injection vulnerability exits in TOTOLINK A3100R <=V4.1.2cu.5050_B20200504 in adm/ntm.asp via the hosTime parameters.