CVE-2012-1941

Heap-based buffer overflow in the nsHTMLReflowState::CalculateHypotheticalBox function in Mozilla Firefox 4.x through 12.0, Firefox ESR 10.x before 10.0.5…

published June 5, 2012

CVSS
—
EPSS
5%
Percentile
91.9
In the wild
Unconfirmed
What it is

⚠️ A heap-based buffer overflow lurking in Firefox and Thunderbird could let attackers run arbitrary code just by resizing a window! 🔥 Think of it like a restaurant where the seating arrangement is so tightly packed that moving one chair causes the entire table to collapse — that’s how a simple window resize could trigger chaos in your browser! If exploited, an attacker could take control of your browser, allowing them to execute malicious code that could compromise your system or steal sensitive data. This could lead to devastating consequences for your online security and privacy, making it a critical issue to address!

Put simply

Think of it like a restaurant where the seating arrangement is so tightly packed that moving one chair causes the entire table to collapse — that’s how a simple window resize could trigger chaos in your browser! This vulnerability exists in the nsHTMLReflowState::CalculateHypotheticalBox function, where improper handling of window resizing can lead to unexpected memory operations, enabling remote code execution.

What to do

If exploited, an attacker could take control of your browser, allowing them to execute malicious code that could compromise your system or steal sensitive data. This could lead to devastating consequences for your online security and privacy, making it a critical issue to address! It's crucial to update Mozilla Firefox and Thunderbird to versions 10.0.5 or later to close this vulnerability. Ensure that your browser and email client are always up to date for the best protection! Stay vigilant and keep those browsers updated — you've got this! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.04798 · 91.9th percentile
Published
2012-06-05T23:00Z
EPSS history
Timeline
  • 05 JUN 23:00Z
    Heap-based buffer overflow in the nsHTMLReflowState::CalculateHypotheticalBox function in Mozilla Firefox 4.x through 12.0, Firefox ESR 10.x before 10.0.5…
    cvelistv5