CVE-2021-21887CWE-121

A stack-based buffer overflow vulnerability exists in the Web Manager SslGenerateCSR functionality of Lantronix PremierWave 2050 8.9.0.0R4 (in QEMU)

Critical 路 published December 22, 2021

CVSS v3.0
9.1
EPSS
3%
Percentile
87.6
In the wild
Unconfirmed
What it is

馃敟 A carefully crafted HTTP request is all it takes to unleash chaos! An authenticated attacker can trigger a stack-based buffer overflow in Lantronix PremierWave 2050's SslGenerateCSR functionality, paving the way for remote code execution. Think of it like a highly secure vault that has a tiny, unnoticed crack. If a determined thief knows where to push, they can open the door and access everything inside without a trace! The consequences could be absolutely devastating. An attacker could gain full control over the system, allowing them to execute malicious code, steal sensitive data, or disrupt services entirely. This is a severe risk that could compromise your network's integrity!

Put simply

Think of it like a highly secure vault that has a tiny, unnoticed crack. If a determined thief knows where to push, they can open the door and access everything inside without a trace! This vulnerability allows an authenticated attacker to exploit a stack-based buffer overflow by sending a specially crafted HTTP request to the Web Manager's SslGenerateCSR function, potentially leading to remote code execution on the system.

What to do

The consequences could be absolutely devastating. An attacker could gain full control over the system, allowing them to execute malicious code, steal sensitive data, or disrupt services entirely. This is a severe risk that could compromise your network's integrity! Immediate action is essential! Patch the Lantronix PremierWave 2050 to version 8.9.0.1R4 or later to close this loophole. Additionally, review access controls to limit authenticated user privileges and check logs for any suspicious activity to ensure your network remains secure. You've got this! With these steps, you'll be a security hero in no time! 馃Ω

The record
Technical detail
CVSS v3.0
9.1 路 CRITICAL
Vector
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.03087 路 87.6th percentile
Weakness
CWE-121 路 Stack-based Buffer Overflow
Published
2021-12-22T18:06Z
EPSS history
Timeline
  • 22 DEC 18:06Z
    A stack-based buffer overflow vulnerability exists in the Web Manager SslGenerateCSR functionality of Lantronix PremierWave 2050 8.9.0.0R4 (in QEMU)
    cvelistv5