CVE-2021-38002

Use after free in Web Transport in Google Chrome prior to 95.0.4638.69 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML…

published November 23, 2021

CVSS
—
EPSS
1%
Percentile
61.7
In the wild
Unconfirmed
What it is

🚨 A crafty use-after-free vulnerability in Google Chrome’s Web Transport could let attackers escape the sandbox with just a cleverly designed HTML page! 🔥 Think of it like a magician performing a disappearing act—everything seems safe until the rabbit escapes the hat! This flaw allows an attacker to manipulate memory and break out of the controlled environment, potentially leading to serious mishaps. If exploited, an attacker could gain unauthorized access to sensitive data or perform actions on behalf of the user—all while remaining undetected. It's a sneaky way to bypass security measures and could lead to an absolute catastrophe if not addressed!

Put simply

Think of it like a magician performing a disappearing act—everything seems safe until the rabbit escapes the hat! This flaw allows an attacker to manipulate memory and break out of the controlled environment, potentially leading to serious mishaps. This use-after-free vulnerability occurs when the Web Transport component deallocates an object but still allows access to it, creating opportunities for attackers to execute arbitrary code in the browser.

What to do

If exploited, an attacker could gain unauthorized access to sensitive data or perform actions on behalf of the user—all while remaining undetected. It's a sneaky way to bypass security measures and could lead to an absolute catastrophe if not addressed! To mitigate this vulnerability, ensure you update Google Chrome to version 95.0.4638.69 or later. Regularly check for updates and consider implementing additional security measures, such as browser flags that enhance sandboxing functionality. You've got this! Just keep your browser updated, and you’ll be well on your way to superhero status in internet security! 🦸‍♂️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00973 · 61.7th percentile
Published
2021-11-23T21:30Z
EPSS history
Timeline
  • 23 NOV 21:30Z
    Use after free in Web Transport in Google Chrome prior to 95.0.4638.69 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML…
    cvelistv5