CVE-2009-3382

layout/base/nsCSSFrameConstructor.cpp in the browser engine in Mozilla Firefox 3.0.x before 3.0.15 does not properly handle first-letter frames, which allows…

published October 29, 2009

CVSS
—
EPSS
11%
Percentile
95.9
In the wild
Unconfirmed
What it is

⚠️ A sneaky flaw in Firefox could let attackers send your browser crashing down, like a wayward waiter tripping on a spilled drink. 🍹 Think of your browser as a fancy restaurant. If the waiter misdelivers an important order, it could throw the entire dining experience into chaos. This vulnerability allows attackers to exploit mishandled first-letter frames, causing a disruption much like that waiter causing a ruckus in the dining room. If exploited, this flaw could lead to a denial of service, resulting in your browser crashing unexpectedly. In the worst case, it could even allow a clever attacker to execute arbitrary code, potentially giving them the keys to the kingdom—or at least your browsing session!

Put simply

Think of your browser as a fancy restaurant. If the waiter misdelivers an important order, it could throw the entire dining experience into chaos. This vulnerability allows attackers to exploit mishandled first-letter frames, causing a disruption much like that waiter causing a ruckus in the dining room. This vulnerability occurs in the Firefox rendering engine, specifically in the `nsCSSFrameConstructor.cpp` file, which fails to properly handle first-letter frames, leading to memory corruption and application crashes.

What to do

If exploited, this flaw could lead to a denial of service, resulting in your browser crashing unexpectedly. In the worst case, it could even allow a clever attacker to execute arbitrary code, potentially giving them the keys to the kingdom—or at least your browsing session! To protect yourself, upgrade to Mozilla Firefox version 3.0.15 or later immediately. Regularly updating your browser ensures that you have the latest security patches. Make it a habit to check for updates periodically! You've got this! Follow these steps to keep your browsing experience smooth and secure. 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.10843 · 95.9th percentile
Published
2009-10-29T14:00Z
EPSS history
Timeline
  • 29 OCT 14:00Z
    layout/base/nsCSSFrameConstructor.cpp in the browser engine in Mozilla Firefox 3.0.x before 3.0.15 does not properly handle first-letter frames, which allows…
    cvelistv5