CVE-2023-33669

Tenda AC8V4.0-V16.03.34.06 was discovered to contain a stack overflow via the timeZone parameter in the sub_44db3c function

Critical · published June 2, 2023

CVSS v3.1
9.8
EPSS
2%
Percentile
81.5
In the wild
Unconfirmed
What it is

🔥 A stack overflow can be triggered just by tweaking the timeZone parameter in Tenda AC8V4.0, and that’s a recipe for disaster! Think of it like a restaurant that doesn't enforce portion limits – a single overloaded dish could spill over and disrupt the entire kitchen! In this case, the function's inability to handle excessive input leads to system instability. An attacker could exploit this vulnerability to crash the Tenda device, leading to a service disruption that could even allow them to execute arbitrary code. This could potentially compromise the entire network, exposing sensitive data or allowing unauthorized access to other connected devices!

Put simply

Think of it like a restaurant that doesn't enforce portion limits – a single overloaded dish could spill over and disrupt the entire kitchen! In this case, the function's inability to handle excessive input leads to system instability. This critical stack overflow vulnerability arises from improper handling of the timeZone parameter in the sub_44db3c function, which can lead to memory corruption and unpredictable behavior.

What to do

An attacker could exploit this vulnerability to crash the Tenda device, leading to a service disruption that could even allow them to execute arbitrary code. This could potentially compromise the entire network, exposing sensitive data or allowing unauthorized access to other connected devices! To protect your network, immediately update your Tenda device to the latest firmware version that addresses this flaw. Regularly check for updates and consider implementing stricter input validation to help prevent similar issues in the future. This is fixable! Act fast, and you’ll be one step closer to securing your network! 🛡️

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
0.02089 · 81.5th percentile
Published
2023-06-02T00:00Z
EPSS history
Timeline
  • 02 JUN 00:00Z
    Tenda AC8V4.0-V16.03.34.06 was discovered to contain a stack overflow via the timeZone parameter in the sub_44db3c function
    cvelistv5