CVE-2019-0547

A memory corruption vulnerability exists in the Windows DHCP client when an attacker sends specially crafted DHCP responses to a client, aka "Windows DHCP…

published January 8, 2019

Patch now

High probability of exploitation

NVD has not assigned a CVSS score to this record. It sits in the 99.4th percentile for exploit probability.

CVSS
—
EPSS
71%
Percentile
99.4
In the wild
Unconfirmed
What it is

⚠️ A crafty little DHCP response is all it takes! This memory corruption vulnerability in the Windows DHCP client can open a door for remote code execution, affecting Windows 10 and its server counterparts. 🔥 Think of your computer as a well-guarded restaurant. If an attacker sends a fake food order that the restaurant staff blindly accepts, they could serve something dangerous to all the customers. Here, the DHCP client is the restaurant, and it’s accepting potentially harmful responses without a proper check! An attacker could exploit this vulnerability to execute arbitrary code on the affected system, potentially allowing them to manipulate the system, steal sensitive information, or install malware. While the severity here isn’t classified as critical, the implications of executing malicious code are certainly concerning!

Put simply

Think of your computer as a well-guarded restaurant. If an attacker sends a fake food order that the restaurant staff blindly accepts, they could serve something dangerous to all the customers. Here, the DHCP client is the restaurant, and it’s accepting potentially harmful responses without a proper check! This vulnerability arises when the Windows DHCP client mishandles specially crafted DHCP responses, leading to memory corruption. This flaw can be exploited by sending malicious packets to the client, which could result in remote code execution without needing user interaction.

What to do

An attacker could exploit this vulnerability to execute arbitrary code on the affected system, potentially allowing them to manipulate the system, steal sensitive information, or install malware. While the severity here isn’t classified as critical, the implications of executing malicious code are certainly concerning! To safeguard your systems, ensure that you keep your Windows OS updated with the latest patches. Review and monitor DHCP configurations on your network to ensure they are secure. Regular maintenance and security audits can help mitigate risks! You've got this! With these steps, you'll tighten up your defenses and keep your systems secure! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.71365 · 99.4th percentile
Published
2019-01-08T21:00Z
EPSS history
Timeline
  • 08 JAN 21:00Z
    A memory corruption vulnerability exists in the Windows DHCP client when an attacker sends specially crafted DHCP responses to a client, aka "Windows DHCP…
    cvelistv5