CVE-2017-7809

A use-after-free vulnerability can occur when an editor DOM node is deleted prematurely during tree traversal while still bound to the document

published June 11, 2018

CVSS
—
EPSS
3%
Percentile
85.1
In the wild
Unconfirmed
What it is

⚠️ A rogue editor DOM node could trip up your application. If it gets deleted too soon during tree traversal, it could cause a crash — that’s one unexpected tumble! Think of it like a waiter carrying too many dishes; if one falls off the tray before he reaches the table, it creates quite the mess! Here, the premature deletion of a node leads to instability in your document's structure. An attacker could exploit this vulnerability to crash the application, leading to potential service interruptions. While the current exploitation is not confirmed, the risk of a crash could disrupt user experience and data integrity.

Put simply

Think of it like a waiter carrying too many dishes; if one falls off the tray before he reaches the table, it creates quite the mess! Here, the premature deletion of a node leads to instability in your document's structure. This use-after-free vulnerability arises when an editor DOM node is removed prematurely during tree traversal, leaving dangling references which can lead to a crash.

What to do

An attacker could exploit this vulnerability to crash the application, leading to potential service interruptions. While the current exploitation is not confirmed, the risk of a crash could disrupt user experience and data integrity. To protect against this vulnerability, users should update Thunderbird to version 52.3 or later, and Firefox to version 55 or later. Regularly check for updates and consider implementing defensive coding practices around DOM management. You’ve got this! Keep your applications updated and resilient, and you’ll be a security hero in no time! 🦸

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.02589 · 85.1th percentile
Published
2018-06-11T21:00Z
EPSS history
Timeline
  • 11 JUN 21:00Z
    A use-after-free vulnerability can occur when an editor DOM node is deleted prematurely during tree traversal while still bound to the document
    cvelistv5