CVE-2021-21151

Use after free in Payments in Google Chrome prior to 88.0.4324.182 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page

published February 22, 2021

CVSS
—
EPSS
1%
Percentile
66.3
In the wild
Unconfirmed
What it is

⚡ A crafty HTML page can exploit a use-after-free flaw in Google Chrome's Payments feature before version 88.0.4324.182! 🛑 Imagine the possibilities if an attacker could escape their sandbox and wreak havoc! Think of it like a magician who sneaks out of their own performance area to cause chaos in the audience. A well-crafted trick, and suddenly they’re free where they shouldn't be! If exploited, this vulnerability could allow a remote attacker to break out of the browser's isolated environment. It's like lifting the guardrails at a theme park, enabling access to areas that should be off-limits - potentially leading to unauthorized actions and data exposure.

Put simply

Think of it like a magician who sneaks out of their own performance area to cause chaos in the audience. A well-crafted trick, and suddenly they’re free where they shouldn't be! This use-after-free vulnerability arises when memory is freed but still accessed afterwards, allowing attackers to gain control over the execution flow and perform a sandbox escape via a specially crafted HTML page.

What to do

If exploited, this vulnerability could allow a remote attacker to break out of the browser's isolated environment. It's like lifting the guardrails at a theme park, enabling access to areas that should be off-limits - potentially leading to unauthorized actions and data exposure. Update Google Chrome to version 88.0.4324.182 or later to patch this issue. Ensure your browser is set to auto-update, and consider enabling additional security features like Site Isolation for extra protection. You've got this! Stay safe by keeping your browser up-to-date and secure! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01139 · 66.3th percentile
Published
2021-02-22T21:20Z
EPSS history
Timeline
  • 22 FEB 21:20Z
    Use after free in Payments in Google Chrome prior to 88.0.4324.182 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page
    cvelistv5