CVE-2012-5840

Use-after-free vulnerability in the nsTextEditorState::PrepareEditor function in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird…

published November 21, 2012

CVSS
—
EPSS
6%
Percentile
93.3
In the wild
Unconfirmed
What it is

⚠️ A sneaky use-after-free vulnerability lurks in Mozilla Firefox and Thunderbird, potentially allowing attackers to unleash chaos with just the right trigger! 🔥 Think of it like a recipe book that hasn't been properly edited; one wrong turn could lead to a kitchen disaster where the wrong ingredients cause a catastrophic meal! An attacker could exploit this vulnerability to execute arbitrary code, leading to all sorts of havoc, including a denial of service due to heap memory corruption. Imagine your application crashing at the worst possible moment or worse — giving an attacker full control!

Put simply

Think of it like a recipe book that hasn't been properly edited; one wrong turn could lead to a kitchen disaster where the wrong ingredients cause a catastrophic meal! This use-after-free vulnerability in the nsTextEditorState::PrepareEditor function allows memory to be accessed after it has been freed, which can enable attackers to manipulate the application's operation.

What to do

An attacker could exploit this vulnerability to execute arbitrary code, leading to all sorts of havoc, including a denial of service due to heap memory corruption. Imagine your application crashing at the worst possible moment or worse — giving an attacker full control! Update to the latest versions of Firefox (17.0+), Thunderbird (17.0+), or SeaMonkey (2.14+) immediately. Regularly audit your software versions to ensure they're not affected by vulnerabilities! You've got this! Just follow these steps, and your systems will be more secure in no time! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.06074 · 93.3th percentile
Published
2012-11-21T11:00Z
EPSS history
Timeline
  • 21 NOV 11:00Z
    Use-after-free vulnerability in the nsTextEditorState::PrepareEditor function in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird…
    cvelistv5