CVE-2021-31698

Quectel EG25-G devices through 202006130814 allow executing arbitrary code remotely by using an AT command to place shell metacharacters in…

published August 12, 2021

CVSS
—
EPSS
2%
Percentile
80.6
In the wild
Unconfirmed
What it is

🚨 A crafty command allows attackers to execute arbitrary code on Quectel EG25-G devices with just a simple AT command! ⚡ Picture a delivery driver who accepts any package without checking the label. This vulnerability lets unwanted code slip right into your device's inner workings, just like that package could cause chaos in the wrong hands. An attacker could gain full control over the device, potentially leading to unauthorized access to sensitive data or even taking over the entire system. The possibilities are downright alarming, from espionage to complete service disruption!

Put simply

Picture a delivery driver who accepts any package without checking the label. This vulnerability lets unwanted code slip right into your device's inner workings, just like that package could cause chaos in the wrong hands. This vulnerability allows remote execution of arbitrary code by exploiting the input handling in the atfwd_daemon, specifically through unfiltered AT commands that can include shell metacharacters.

What to do

An attacker could gain full control over the device, potentially leading to unauthorized access to sensitive data or even taking over the entire system. The possibilities are downright alarming, from espionage to complete service disruption! To protect your devices, update to the latest firmware version provided by Quectel that addresses this vulnerability. Additionally, ensure that any AT commands sent to the device are properly sanitized to prevent injection attacks. 🛡️ This is fixable! By following these steps, you can safeguard your devices and keep things running smoothly. You've got this! 😊

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01997 · 80.6th percentile
Published
2021-08-12T21:33Z
EPSS history
Timeline
  • 12 AUG 21:33Z
    Quectel EG25-G devices through 202006130814 allow executing arbitrary code remotely by using an AT command to place shell metacharacters in…
    cvelistv5