CVE-2022-48126

TOTOlink A7100RU V7.4cu.2313_B20191024 was discovered to contain a command injection vulnerability via the username parameter in the…

Critical · published January 20, 2023

CVSS v3.1
9.8
EPSS
2%
Percentile
80.1
In the wild
Unconfirmed
What it is

🔥 A sneaky command injection vulnerability hides in the TOTOlink A7100RU router that allows attackers to take control via a simple username parameter! Think of this like a hotel that lets anyone check in by just saying the right name at the front desk — no ID needed! If someone knows the magic word, they could have full access to all the rooms without any verification. An attacker could exploit this flaw to run arbitrary commands on the device, essentially hijacking your network setup. With this level of access, they could change settings, intercept traffic, or even install malicious software. It's a recipe for disaster if left unpatched!

Put simply

Think of this like a hotel that lets anyone check in by just saying the right name at the front desk — no ID needed! If someone knows the magic word, they could have full access to all the rooms without any verification. This command injection vulnerability can be triggered via the username parameter in the setting/setOpenVpnCertGenerationCfg function. By crafting a malicious username, an attacker can execute commands on the device without proper authorization.

What to do

An attacker could exploit this flaw to run arbitrary commands on the device, essentially hijacking your network setup. With this level of access, they could change settings, intercept traffic, or even install malicious software. It's a recipe for disaster if left unpatched! To protect your network, immediately update the TOTOlink A7100RU to the latest firmware version that addresses this vulnerability. Review your device's settings and ensure no unauthorized changes have been made. Regularly audit your network devices for similar vulnerabilities to stay ahead of potential threats. You've got this! Following these steps will help lock down your network and keep the bad guys at bay. 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01958 · 80.1th percentile
Published
2023-01-20T00:00Z
EPSS history
Timeline
  • 20 JAN 00:00Z
    TOTOlink A7100RU V7.4cu.2313_B20191024 was discovered to contain a command injection vulnerability via the username parameter in the…
    cvelistv5