CVE-2018-4258

In macOS High Sierra before 10.13.5, a buffer overflow was addressed with improved bounds checking

published January 11, 2019

CVSS
—
EPSS
1%
Percentile
69.8
In the wild
Unconfirmed
What it is

⚠️ A buffer overflow in macOS High Sierra before version 10.13.5 is like a spilled drink ruining a perfectly good party — it creates unexpected chaos! Think of your computer's memory as a perfectly organized office. A buffer overflow is like someone cramming too many files into a cabinet that’s already full, causing everything to tumble out and create a mess. It can lead to all sorts of mishaps if not addressed! Without proper bounds checking, this vulnerability opens the door to potential crashes or unexpected behavior in applications. While there’s no known exploitation right now, the consequences of a buffer overflow can be absolutely devastating — a malicious user could gain unauthorized access to sensitive data or even execute arbitrary code!

Put simply

Think of your computer's memory as a perfectly organized office. A buffer overflow is like someone cramming too many files into a cabinet that’s already full, causing everything to tumble out and create a mess. It can lead to all sorts of mishaps if not addressed! This vulnerability arises due to inadequate bounds checking within macOS High Sierra, allowing attackers to manipulate memory allocation and potentially execute harmful code. It’s a classic case of memory management gone awry!

What to do

Without proper bounds checking, this vulnerability opens the door to potential crashes or unexpected behavior in applications. While there’s no known exploitation right now, the consequences of a buffer overflow can be absolutely devastating — a malicious user could gain unauthorized access to sensitive data or even execute arbitrary code! To mitigate this risk, update your macOS to version 10.13.5 or later as soon as possible. This patch improves bounds checking, ensuring a more stable and secure environment. Keep your systems updated regularly to avoid similar vulnerabilities in the future! You've got this! Just follow these steps and you'll have your system secured in no time! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01288 · 69.8th percentile
Published
2019-01-11T18:00Z
EPSS history
Timeline
  • 11 JAN 18:00Z
    In macOS High Sierra before 10.13.5, a buffer overflow was addressed with improved bounds checking
    cvelistv5