CVE-2016-1646KEV · OVERDUE

Google Chromium V8 Out-of-Bounds Read Vulnerability

High · published March 29, 2016

Patch now

Confirmed exploited, and the score agrees

CVSS calls it high at 8.8. It is confirmed in active exploitation. It sits in the 98.9th percentile for exploit probability.

1583
days past CISA
deadline
CVSS v3.1
8.8
EPSS
48%
Percentile
98.9
In the wild
Confirmed
What it is

⚡ A sneaky flaw in the Google V8 engine could let attackers crash your browser with just a few lines of JavaScript! 🔥 Think of it like a restaurant that pushes a full plate of food without checking for dietary restrictions — if someone orders a dish they can't handle, it could lead to chaos in the kitchen! This vulnerability allows remote attackers to create crafted JavaScript code that can cause a denial of service by triggering out-of-bounds reads. The result? Your browser might freeze or crash, leaving users frustrated and exposed to further attacks. Absolutely devastating for anyone relying on Chrome before version 49!

Put simply

Think of it like a restaurant that pushes a full plate of food without checking for dietary restrictions — if someone orders a dish they can't handle, it could lead to chaos in the kitchen! The issue lies in the Array.prototype.concat implementation in Google V8, which fails to properly handle element data types, leading to potential out-of-bounds reads and service disruptions when processing arrays.

What to do

This vulnerability allows remote attackers to create crafted JavaScript code that can cause a denial of service by triggering out-of-bounds reads. The result? Your browser might freeze or crash, leaving users frustrated and exposed to further attacks. Absolutely devastating for anyone relying on Chrome before version 49! To protect your users, update Google Chrome to version 49.0.2623.108 or later immediately. Regularly check for new updates to ensure ongoing protection against such vulnerabilities in the future. You've got this! Keep your browser updated, and you'll be a security hero in no time! 🛡️

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.48110 · 98.9th percentile
Published
2016-03-29T10:00Z
KEV added
2022-06-08 · due 2022-06-22
EPSS history
Timeline
  • 08 JUN 00:00Z
    Added to CISA KEV — remediate by Jun 22
    kev
  • 29 MAR 10:00Z
    The Array.prototype.concat implementation in builtins.cc in Google V8, as used in Google Chrome before 49.0.2623.108, does not properly consider element data…
    cvelistv5