CVE-2019-18852

Certain D-Link devices have a hardcoded Alphanetworks user account with TELNET access because of /etc/config/image_sign or /etc/alpha_config/image_sign

published November 11, 2019

CVSS
—
EPSS
2%
Percentile
75.8
In the wild
Unconfirmed
What it is

⚠️ A hidden account is snoozing in your D-Link devices! This hardcoded Alphanetworks user account has TELNET access, and it’s hanging out in your device's configuration files. 🚨 Think of it like a secret access code left in the blueprint of a high-security building, allowing anyone who knows where to look to come right in and check out the place. This little secret could give an attacker unfettered control, just like a thief with the master key! If an attacker discovers this hardcoded account, they could potentially gain access to your network, snooping around and altering settings as they please. This could lead to unauthorized access to sensitive information or even manipulation of your device's functionality, creating a surprisingly sneaky security hole!

Put simply

Think of it like a secret access code left in the blueprint of a high-security building, allowing anyone who knows where to look to come right in and check out the place. This little secret could give an attacker unfettered control, just like a thief with the master key! The vulnerability stems from certain D-Link devices containing a hardcoded Alphanetworks user account with TELNET access, which can be exploited due to its presence in configuration files (/etc/config/image_sign or /etc/alpha_config/image_sign). This affects multiple models including DIR-600 B1 and DIR-890L A1.

What to do

If an attacker discovers this hardcoded account, they could potentially gain access to your network, snooping around and altering settings as they please. This could lead to unauthorized access to sensitive information or even manipulation of your device's functionality, creating a surprisingly sneaky security hole! To address this vulnerability, check your D-Link device model against the affected list and consider updating the firmware to the latest version if available. Additionally, disable TELNET access if it's not in use and use more secure protocols whenever possible. 🛡️ You've got this! By following these steps, you can bolster your defenses and keep your network safe! 💪✨

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01611 · 75.8th percentile
Published
2019-11-11T13:42Z
EPSS history
Timeline
  • 11 NOV 13:42Z
    Certain D-Link devices have a hardcoded Alphanetworks user account with TELNET access because of /etc/config/image_sign or /etc/alpha_config/image_sign
    cvelistv5