CVE-2019-5786KEV · OVERDUE

Google Chrome Blink Use-After-Free Vulnerability

Medium · published June 27, 2019

Patch now

The score understates this — it's already being exploited

CVSS calls it medium at 6.5. It is confirmed in active exploitation. It sits in the 99.2th percentile for exploit probability.

1593
days past CISA
deadline
CVSS v3.1
6.5
EPSS
61%
Percentile
99.2
In the wild
Confirmed
What it is

⚠️ A crafty little flaw in Google Chrome could turn a seemingly innocent webpage into a gateway for attackers! 🚨 Think of this vulnerability like a poorly designed amusement park ride that unexpectedly throws passengers off course — here, a malicious HTML page could lead to out-of-bounds memory access, like venturing into restricted areas of the park. 🎢 If exploited, an attacker could gain unauthorized access to sensitive data or take control of your browsing experience — think of the potential chaos if someone commandeered your ride! This could lead to data leaks or even remote code execution, which is absolutely devastating.

Put simply

Think of this vulnerability like a poorly designed amusement park ride that unexpectedly throws passengers off course — here, a malicious HTML page could lead to out-of-bounds memory access, like venturing into restricted areas of the park. 🎢 This vulnerability arises from an object lifetime issue in Blink, Google's rendering engine in Chrome, allowing unauthorized memory access via a crafted HTML page. Essentially, it opens a door for attackers to manipulate how memory is handled within the browser.

What to do

If exploited, an attacker could gain unauthorized access to sensitive data or take control of your browsing experience — think of the potential chaos if someone commandeered your ride! This could lead to data leaks or even remote code execution, which is absolutely devastating. Update Google Chrome to version 72.0.3626.121 or later immediately! Also, consider implementing strong security measures like content security policies to mitigate risks from questionable pages. 🔒 Don't skip this — every little step matters! You've got this! By keeping your browser up to date, you're already a security hero! 🦸‍♂️

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.61085 · 99.2th percentile
Published
2019-06-27T16:13Z
KEV added
2022-05-23 · due 2022-06-13
EPSS history
Timeline
  • 23 MAY 00:00Z
    Added to CISA KEV — remediate by Jun 13
    kev
  • 27 JUN 16:13Z
    Object lifetime issue in Blink in Google Chrome prior to 72.0.3626.121 allowed a remote attacker to potentially perform out of bounds memory access via a…
    cvelistv5