CVE-2016-2339

An exploitable heap overflow vulnerability exists in the Fiddle::Function.new "initialize" function functionality of Ruby

published January 6, 2017

CVSS
—
EPSS
5%
Percentile
92.3
In the wild
Unconfirmed
What it is

⚠️ A crafty object can tip the scales, creating a heap overflow in Ruby's Fiddle! Just like a waiter who keeps serving until the table topples over, this bug can lead to unexpected consequences. 🔥 Think of it like a restaurant where the chef keeps adding dishes to a table that's already full. If the staff aren't careful to check the space, everything could end up spilling over! This heap overflow vulnerability could allow an attacker to manipulate memory allocation, potentially leading to data corruption or crashes. It’s not the end of the world, but it could turn a well-oiled machine into a messy kitchen if exploited!

Put simply

Think of it like a restaurant where the chef keeps adding dishes to a table that's already full. If the staff aren't careful to check the space, everything could end up spilling over! The vulnerability occurs in the `Fiddle::Function.new "initialize"` function, where an attacker can pass a specially crafted object that increases the size of the `args` array after memory allocation, causing a heap overflow.

What to do

This heap overflow vulnerability could allow an attacker to manipulate memory allocation, potentially leading to data corruption or crashes. It’s not the end of the world, but it could turn a well-oiled machine into a messy kitchen if exploited! While this vulnerability isn't being actively exploited, it's wise to update your Ruby version to the latest one, ensuring any related fixes are included. Review your code for the use of Fiddle to prevent any sneaky overflows. 🛡️ You've got this! Stay proactive, follow these steps, and keep your Ruby environment secure! 🌟

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.05144 · 92.3th percentile
Published
2017-01-06T21:00Z
EPSS history
Timeline
  • 06 JAN 21:00Z
    An exploitable heap overflow vulnerability exists in the Fiddle::Function.new "initialize" function functionality of Ruby
    cvelistv5