CVE-2022-44255

TOTOLINK LR350 V9.3.5u.6369_B20220309 contains a pre-authentication buffer overflow in the main function via long post data

Critical · published November 23, 2022

CVSS v3.1
9.8
EPSS
2%
Percentile
83.0
In the wild
Unconfirmed
What it is

🔥 A pre-authentication buffer overflow is lurking in TOTOLINK LR350, letting attackers remotely exploit the main function without needing to log in! ⚡ Think of it like a delivery service that doesn't check the contents of a package before it enters the building — if someone sends a suspiciously oversized box, it could wreak havoc inside! If an attacker takes advantage of this vulnerability, they could overflow the buffer and execute their malicious code, potentially gaining full control of the device. This isn't just a minor inconvenience; it could lead to devastating consequences like data leaks or complete system takeover!

Put simply

Think of it like a delivery service that doesn't check the contents of a package before it enters the building — if someone sends a suspiciously oversized box, it could wreak havoc inside! This vulnerability arises from the way the TOTOLINK LR350 handles long POST data without proper bounds checking, allowing attackers to exploit the buffer overflow before authentication.

What to do

If an attacker takes advantage of this vulnerability, they could overflow the buffer and execute their malicious code, potentially gaining full control of the device. This isn't just a minor inconvenience; it could lead to devastating consequences like data leaks or complete system takeover! To protect your network, immediately patch the device to version V9.3.5u.6369_B20220310, which addresses this critical flaw. Additionally, review your security settings to restrict access and monitor for any suspicious activities. You've got this! Follow these steps and keep your network secure! 🛡️

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
0.02276 · 83.0th percentile
Published
2022-11-23T00:00Z
EPSS history
Timeline
  • 23 NOV 00:00Z
    TOTOLINK LR350 V9.3.5u.6369_B20220309 contains a pre-authentication buffer overflow in the main function via long post data
    cvelistv5