CVE-2017-12187CWE-391

xorg-x11-server before 1.19.5 was missing length validation in RENDER extension allowing malicious X client to cause X server to crash or possibly execute…

published January 24, 2018

CVSS
—
EPSS
3%
Percentile
88.6
In the wild
Unconfirmed
What it is

⚠️ A missing length check in xorg-x11-server can let a crafty attacker cause chaos! It’s like a waiter bringing out a massive order that nobody actually placed. 😱 Imagine a restaurant without portion control, serving up gigantic dishes based on whatever was shouted from the kitchen! If there's no one keeping track, soon enough, the kitchen will be overwhelmed, and chaos will ensue. If exploited, this flaw could cause the X server to crash, leading to a frustrating experience for users. Even worse, it might open a door for an attacker to execute arbitrary code, turning a simple dining mishap into a full-blown kitchen fire!

Put simply

Imagine a restaurant without portion control, serving up gigantic dishes based on whatever was shouted from the kitchen! If there's no one keeping track, soon enough, the kitchen will be overwhelmed, and chaos will ensue. This vulnerability in xorg-x11-server versions prior to 1.19.5 fails to validate the length of data in the RENDER extension, allowing attackers to send crafted requests that could crash the server or lead to code execution.

What to do

If exploited, this flaw could cause the X server to crash, leading to a frustrating experience for users. Even worse, it might open a door for an attacker to execute arbitrary code, turning a simple dining mishap into a full-blown kitchen fire! Upgrade your xorg-x11-server to version 1.19.5 or later to mitigate this risk. Regularly audit your existing systems and ensure proper input validation practices are in place to avoid similar vulnerabilities in the future. You've got this! Follow these steps, and you’ll have your system running smoothly in no time! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.03346 · 88.6th percentile
Weakness
CWE-391 · Unchecked Error Condition
Published
2018-01-24T15:00Z
EPSS history
Timeline
  • 24 JAN 15:00Z
    xorg-x11-server before 1.19.5 was missing length validation in RENDER extension allowing malicious X client to cause X server to crash or possibly execute…
    cvelistv5