CVE-2021-21150

Use after free in Downloads in Google Chrome on Windows prior to 88.0.4324.182 allowed a remote attacker who had compromised the renderer process to…

published February 22, 2021

CVSS
—
EPSS
1%
Percentile
67.1
In the wild
Unconfirmed
What it is

🚨 A crafty HTML page can lead to a potentially devastating sandbox escape in Google Chrome for Windows! Think of it like a delivery person getting into a restricted area just because the door wasn't properly secured. If they can slip past the defenses, who knows what sensitive packages they could tamper with? If an attacker compromises the renderer process, they might escape the safety net of the Chrome sandbox, opening the door to stealing data or executing harmful code. The potential fallout could be absolutely devastating for users, as their files and privacy might hang in the balance!

Put simply

Think of it like a delivery person getting into a restricted area just because the door wasn't properly secured. If they can slip past the defenses, who knows what sensitive packages they could tamper with? This vulnerability stems from a use-after-free issue in the Downloads feature of Google Chrome, allowing a remote attacker to exploit it through a specially crafted HTML page. The flaw can enable unauthorized access to system resources, hindering the browser’s protective measures.

What to do

If an attacker compromises the renderer process, they might escape the safety net of the Chrome sandbox, opening the door to stealing data or executing harmful code. The potential fallout could be absolutely devastating for users, as their files and privacy might hang in the balance! Users should ensure they're running the latest version of Chrome, specifically at least 88.0.4324.182. Regularly check for updates and enable automatic updates to keep your browser secure from such sneaky attacks. 🛡️ You've got this! Stay vigilant with updates, and you'll keep that browser locked down tight! 💪✨

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01170 · 67.1th percentile
Published
2021-02-22T21:20Z
EPSS history
Timeline
  • 22 FEB 21:20Z
    Use after free in Downloads in Google Chrome on Windows prior to 88.0.4324.182 allowed a remote attacker who had compromised the renderer process to…
    cvelistv5