CVE-2023-40414

A use-after-free issue was addressed with improved memory management

Critical · published January 10, 2024

CVSS v3.1
9.8
EPSS
1%
Percentile
66.6
In the wild
Unconfirmed
What it is

🔥 A use-after-free vulnerability in Safari could let attackers execute arbitrary code simply by processing web content. Yikes! Imagine a delivery service that keeps using an address after the building has been demolished. They might send your important package to a non-existent location, leading to chaos! In this case, memory management errors allow the system to act on outdated information, causing potential havoc for users. If exploited, this vulnerability could allow an attacker to run their own code on your device, leading to complete control over it. They could access sensitive data, install malware, or even turn your device into a launching pad for further attacks! That's absolutely devastating!

Put simply

Imagine a delivery service that keeps using an address after the building has been demolished. They might send your important package to a non-existent location, leading to chaos! In this case, memory management errors allow the system to act on outdated information, causing potential havoc for users. This use-after-free issue occurs when the memory allocated for a specific object is freed, but the program continues to reference it, allowing an attacker to manipulate the system memory and execute arbitrary code.

What to do

If exploited, this vulnerability could allow an attacker to run their own code on your device, leading to complete control over it. They could access sensitive data, install malware, or even turn your device into a launching pad for further attacks! That's absolutely devastating! Update to watchOS 10, iOS 17, iPadOS 17, tvOS 17, macOS Sonoma 14, or Safari 17 to close this vulnerability. Regularly patch your systems and monitor for updates to ensure ongoing protection against potential exploits. You've got this! Just follow these steps, and you’ll be securing your devices like a pro! 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01151 · 66.6th percentile
Published
2024-01-10T22:03Z
EPSS history
Timeline
  • 10 JAN 22:03Z
    A use-after-free issue was addressed with improved memory management
    cvelistv5