CVE-2009-0775

Double free vulnerability in Mozilla Firefox before 3.0.7, Thunderbird before 2.0.0.21, and SeaMonkey before 1.1.15 allows remote attackers to execute…

published March 5, 2009

CVSS
—
EPSS
5%
Percentile
91.8
In the wild
Unconfirmed
What it is

⚠️ This double-free vulnerability in older versions of Firefox and Thunderbird allows crafty attackers to maneuver around garbage collection! It's like throwing away the same item twice without realizing you've already done it. 🔥 Think of it as a restaurant misplacing your order — they try to serve you the same dish twice, causing confusion in the kitchen. Just like that, the browser mishandles the memory, creating an opportunity for some unwanted code execution! In the worst-case scenario, an attacker could leverage this vulnerability to execute arbitrary code on your system, leading to potential data breaches or other malicious activities. While it’s not actively exploited, the implications could be quite serious if an attacker knows how to take advantage of it.

Put simply

Think of it as a restaurant misplacing your order — they try to serve you the same dish twice, causing confusion in the kitchen. Just like that, the browser mishandles the memory, creating an opportunity for some unwanted code execution! This vulnerability arises from how Firefox, Thunderbird, and SeaMonkey handle cloned XUL DOM elements linked as parent and child during garbage collection, leading to improper memory management and potential double-free errors.

What to do

In the worst-case scenario, an attacker could leverage this vulnerability to execute arbitrary code on your system, leading to potential data breaches or other malicious activities. While it’s not actively exploited, the implications could be quite serious if an attacker knows how to take advantage of it. Upgrade to Firefox version 3.0.7, Thunderbird version 2.0.0.21, or SeaMonkey version 1.1.15 to secure your system. Regularly check for updates and patches to ensure you’re protected against such vulnerabilities. You've got this! With these updates, you'll be well on your way to being a security hero! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.04709 · 91.8th percentile
Published
2009-03-05T02:00Z
EPSS history
Timeline
  • 05 MAR 02:00Z
    Double free vulnerability in Mozilla Firefox before 3.0.7, Thunderbird before 2.0.0.21, and SeaMonkey before 1.1.15 allows remote attackers to execute…
    cvelistv5