CVE-2007-4771

Heap-based buffer overflow in the doInterval function in regexcmp.cpp in libicu in International Components for Unicode (ICU) 3.8.1 and earlier allows…

published January 28, 2008

CVSS
—
EPSS
3%
Percentile
84.8
In the wild
Unconfirmed
What it is

⚠️ A crafty regex can lead to a heap of trouble! The doInterval function in ICU 3.8.1 and earlier is vulnerable to a buffer overflow, leaving your system gasping for memory. 🔥 This is like a restaurant kitchen that over-accepts orders without checking how many pots they have – too many requests can boil over, causing everything to shut down! If exploited, this vulnerability could lead to a denial of service, consuming all available memory and crashing the application. It's like a kitchen in chaos, unable to serve customers because it's buried under a mountain of orders!

Put simply

This is like a restaurant kitchen that over-accepts orders without checking how many pots they have – too many requests can boil over, causing everything to shut down! The heap-based buffer overflow occurs when a regular expression writes excessive data to the backtracking stack during processing in the doInterval function of libicu.

What to do

If exploited, this vulnerability could lead to a denial of service, consuming all available memory and crashing the application. It's like a kitchen in chaos, unable to serve customers because it's buried under a mountain of orders! To mitigate this issue, upgrade to ICU version 3.8.2 or later to ensure the buffer overflow is patched. It's also wise to review your application for any regex patterns that could lead to excessive memory consumption. You've got this! Follow the steps to patch up your system, and keep your environment safe and sound. 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.02538 · 84.8th percentile
Published
2008-01-28T23:00Z
EPSS history
Timeline
  • 28 JAN 23:00Z
    Heap-based buffer overflow in the doInterval function in regexcmp.cpp in libicu in International Components for Unicode (ICU) 3.8.1 and earlier allows…
    cvelistv5