CVE-2023-43242

D-Link DIR-816 A2 v1.10CNB05 was discovered to contain a stack overflow via parameter removeRuleList in form2IPQoSTcDel

High · published September 21, 2023

CVSS v3.1
8.8
EPSS
1%
Percentile
69.9
In the wild
Unconfirmed
What it is

⚡ A sneaky stack overflow hides in the D-Link DIR-816 A2's configuration, just waiting for the wrong input! 🔥 Think of this vulnerability as a crowded elevator where one extra person causes it to malfunction — it's a little overflow leading to a lot of chaos. In this case, the overload comes from the 'removeRuleList' parameter in the device's settings. With this stack overflow, an attacker could potentially crash the device or execute their own code — effectively taking control of your network! This could lead to unauthorized access to sensitive data or even a full device takeover, making it a serious concern for anyone using this router.

Put simply

Think of this vulnerability as a crowded elevator where one extra person causes it to malfunction — it's a little overflow leading to a lot of chaos. In this case, the overload comes from the 'removeRuleList' parameter in the device's settings. This vulnerability arises from a stack overflow triggered by improper handling of the 'removeRuleList' parameter in the 'form2IPQoSTcDel' function. Essentially, it allows an attacker to exploit memory handling errors, potentially leading to arbitrary code execution.

What to do

With this stack overflow, an attacker could potentially crash the device or execute their own code — effectively taking control of your network! This could lead to unauthorized access to sensitive data or even a full device takeover, making it a serious concern for anyone using this router. It's crucial to patch the D-Link DIR-816 A2 to the latest firmware version (v1.10CNB06 or above) immediately. Besides updating, consider implementing network segmentation and monitoring for unusual activity to further safeguard your environment. You've got this! Follow these steps to shore up your defenses and keep your network secure! 🛡️

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01283 · 69.9th percentile
Published
2023-09-21T00:00Z
EPSS history
Timeline
  • 21 SEP 00:00Z
    D-Link DIR-816 A2 v1.10CNB05 was discovered to contain a stack overflow via parameter removeRuleList in form2IPQoSTcDel
    cvelistv5