CVE-2018-5099

A use-after-free vulnerability can occur when the widget listener is holding strong references to browser objects that have previously been freed, resulting in…

published June 11, 2018

CVSS
—
EPSS
3%
Percentile
87.0
In the wild
Unconfirmed
What it is

⚠️ A hidden crash threat lurks in the shadows! This use-after-free vulnerability in Thunderbird and Firefox could trigger an unexpected meltdown, leaving users in an unexpected bind! 🔥 Think of it like a restaurant where a waiter keeps serving meals to customers who’ve already left — chaos ensues when the kitchen tries to serve the same orders to empty tables. In this case, the widget listener still holds onto freed browser objects, leading to crashes. If exploited, this vulnerability could lead to crashes in the affected applications, potentially causing data loss or user frustration. Imagine suddenly losing your connection when sending an important email or browsing your favorite site; it’s frustrating and can be absolutely devastating!

Put simply

Think of it like a restaurant where a waiter keeps serving meals to customers who’ve already left — chaos ensues when the kitchen tries to serve the same orders to empty tables. In this case, the widget listener still holds onto freed browser objects, leading to crashes. This use-after-free vulnerability occurs when the widget listener maintains strong references to browser objects that have already been freed, allowing for potentially dangerous operations to occur on those objects, which could lead to application crashes.

What to do

If exploited, this vulnerability could lead to crashes in the affected applications, potentially causing data loss or user frustration. Imagine suddenly losing your connection when sending an important email or browsing your favorite site; it’s frustrating and can be absolutely devastating! To protect your systems, upgrade to Thunderbird version 52.6 or later, Firefox ESR 52.6 or later, and Firefox 58 or later. Regularly check for updates and ensure that your applications are running the latest versions to stay secure! You've got this! By following these steps, you’ll keep your applications running smoothly and securely. 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.02966 · 87.0th percentile
Published
2018-06-11T21:00Z
EPSS history
Timeline
  • 11 JUN 21:00Z
    A use-after-free vulnerability can occur when the widget listener is holding strong references to browser objects that have previously been freed, resulting in…
    cvelistv5