CVE-2017-12183CWE-391

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

published January 24, 2018

CVSS
—
EPSS
4%
Percentile
91.4
In the wild
Unconfirmed
What it is

⚠️ A sneaky length validation oversight in the XFIXES extension can allow a crafty X client to trip up the X server! Think of it like a waiter taking a food order without checking if the kitchen can handle that many requests at once. If the order is too big to process, it can cause a massive backup in the kitchen! If exploited, this vulnerability could crash the X server or, even worse, allow malicious code to be executed. Imagine the havoc that could cause, potentially compromising your system's integrity or availability!

Put simply

Think of it like a waiter taking a food order without checking if the kitchen can handle that many requests at once. If the order is too big to process, it can cause a massive backup in the kitchen! This vulnerability in xorg-x11-server (before version 1.19.5) arises from a lack of length validation in the XFIXES extension. An attacker can manipulate input sizes to crash the server or execute arbitrary code.

What to do

If exploited, this vulnerability could crash the X server or, even worse, allow malicious code to be executed. Imagine the havoc that could cause, potentially compromising your system's integrity or availability! To mitigate this risk, update xorg-x11-server to version 1.19.5 or later. This will ensure that the length validation issue is addressed, securing your system against potential exploits. Regularly check for updates to keep your systems robust and secure! You can absolutely tackle this! By following these steps, you'll keep your X server secure and running smoothly. 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.04494 · 91.4th 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 XFIXES extension allowing malicious X client to cause X server to crash or possibly execute…
    cvelistv5