CVE-2022-36361CWE-120

A vulnerability has been identified in LOGO!

Critical · published October 11, 2022

CVSS v3.1
9.8
EPSS
1%
Percentile
65.0
In the wild
Unconfirmed
What it is

🚨 A flaw in LOGO! devices could let attackers unleash their creativity and run custom code at will — no fancy hacking skills required! 🔥 Think of it like a restaurant where the chef never checks the ingredients of deliveries. If a sneaky supplier sends in spoiled food without a second glance, it could ruin the entire menu. That's what's happening here with these TCP packets! An attacker could manipulate the TCP packets, causing buffer overflows that may lead to total control over the device. This means they could execute malicious code, potentially hijacking operations or causing chaotic failures in automated processes. The results could be absolutely devastating for any systems relying on LOGO! devices.

Put simply

Think of it like a restaurant where the chef never checks the ingredients of deliveries. If a sneaky supplier sends in spoiled food without a second glance, it could ruin the entire menu. That's what's happening here with these TCP packets! This vulnerability arises from improper validation of TCP packet structures, leading to buffer overflow vulnerabilities that can compromise the instruction counter and allow arbitrary code execution.

What to do

An attacker could manipulate the TCP packets, causing buffer overflows that may lead to total control over the device. This means they could execute malicious code, potentially hijacking operations or causing chaotic failures in automated processes. The results could be absolutely devastating for any systems relying on LOGO! devices. Immediately patch all affected LOGO! devices to the latest firmware provided by Siemens. Ensure that device configurations are updated to mitigate potential exploitation and consider implementing network segmentation to limit exposure. Regularly audit your systems for unpatched vulnerabilities. You've got this! Follow these steps, and you'll be a security hero in no time! 🛡️

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/E:P/RL:T/RC:C
CVSS v4.0
Not supplied
EPSS
0.01087 · 65.0th percentile
Weakness
CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Published
2022-10-11T00:00Z
EPSS history
Timeline
  • 11 OCT 00:00Z
    A vulnerability has been identified in LOGO!
    cvelistv5