CVE-2018-17786

On D-Link DIR-823G devices, ExportSettings.sh, upload_settings.cgi, GetDownLoadSyslog.sh, and upload_firmware.cgi do not require authentication, which allows…

published October 2, 2018

CVSS
—
EPSS
4%
Percentile
90.7
In the wild
Unconfirmed
What it is

🚨 Certain D-Link DIR-823G devices have a serious oversight where multiple scripts don’t require authentication — it’s like an unlocked back door just waiting for someone to stroll in! 😱 Imagine leaving the garage door wide open with valuable tools inside — anyone can just walk in and take what they want. This vulnerability functions similarly, allowing attackers to execute arbitrary code without breaking a sweat. An attacker could exploit this oversight to run any code they wish, potentially taking control of the device entirely. This means they could change settings, intercept traffic, or even use the device as a launchpad for further attacks — absolutely devastating!

Put simply

Imagine leaving the garage door wide open with valuable tools inside — anyone can just walk in and take what they want. This vulnerability functions similarly, allowing attackers to execute arbitrary code without breaking a sweat. The vulnerability resides in several scripts (ExportSettings.sh, upload_settings.cgi, GetDownLoadSyslog.sh, and upload_firmware.cgi) on D-Link DIR-823G devices that fail to enforce authentication, allowing remote attackers to execute arbitrary commands.

What to do

An attacker could exploit this oversight to run any code they wish, potentially taking control of the device entirely. This means they could change settings, intercept traffic, or even use the device as a launchpad for further attacks — absolutely devastating! To secure your devices, first ensure you update to the latest firmware version that addresses this issue. Additionally, consider disabling any unused features or services that may expose your device further, and enable robust password protection where possible. This is fixable! By following these steps, you’ll keep your device secure and regain peace of mind. 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.04115 · 90.7th percentile
Published
2018-10-02T18:00Z
EPSS history
Timeline
  • 02 OCT 18:00Z
    On D-Link DIR-823G devices, ExportSettings.sh, upload_settings.cgi, GetDownLoadSyslog.sh, and upload_firmware.cgi do not require authentication, which allows…
    cvelistv5