CVE-2017-7750

A use-after-free vulnerability during video control operations when a "<track>" element holds a reference to an older window if that window has been replaced…

published June 11, 2018

CVSS
—
EPSS
3%
Percentile
86.3
In the wild
Unconfirmed
What it is

⚠️ A video control hiccup could lead to a crash! The use-after-free vulnerability in Firefox and Thunderbird can trigger when a `<track>` element clings to an old window that’s no longer there. 📺💥 Think of it like a director trying to call action on a scene from a movie that’s already been edited out of the final cut — the script is there, but the context is gone! This vulnerability could lead to potentially unforeseen crashes, leaving users frustrated and wondering what went wrong. While no malicious exploit is currently known, the instability it could introduce in your applications isn't something to ignore. Imagine your video streaming suddenly freezing or crashing — absolutely devastating!

Put simply

Think of it like a director trying to call action on a scene from a movie that’s already been edited out of the final cut — the script is there, but the context is gone! This use-after-free vulnerability occurs during video control operations when a `<track>` element incorrectly references a replaced window in the DOM, allowing for possible crashes when accessed.

What to do

This vulnerability could lead to potentially unforeseen crashes, leaving users frustrated and wondering what went wrong. While no malicious exploit is currently known, the instability it could introduce in your applications isn't something to ignore. Imagine your video streaming suddenly freezing or crashing — absolutely devastating! To mitigate this issue, upgrade to Firefox version 54 or later, or Thunderbird version 52.2 or later. Regularly check for updates and ensure that your software is always running on the latest version. You've got this! Following these steps will keep your applications running smoothly and securely. 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.02776 · 86.3th percentile
Published
2018-06-11T21:00Z
EPSS history
Timeline
  • 11 JUN 21:00Z
    A use-after-free vulnerability during video control operations when a "<track>" element holds a reference to an older window if that window has been replaced…
    cvelistv5