CVE-2018-4257

In macOS High Sierra before 10.13.5, a buffer overflow was addressed with improved size validation

published January 11, 2019

CVSS
—
EPSS
1%
Percentile
70.0
In the wild
Unconfirmed
What it is

⚠️ A buffer overflow in macOS High Sierra could let crafty attackers sneak in undetected. 🛠️ Think of it like trying to fit a giant couch through a small doorway — if the couch is too big, it can cause the door frame to break, letting unwanted guests into your living room. In this scenario, an attacker could potentially exploit this opening to manipulate system memory, leading to unauthorized actions. While there's no direct evidence of exploitation yet, that doesn't mean the door should be left wide open!

Put simply

Think of it like trying to fit a giant couch through a small doorway — if the couch is too big, it can cause the door frame to break, letting unwanted guests into your living room. CVE-2018-4257 is a buffer overflow issue in macOS High Sierra prior to version 10.13.5, where inadequate size validation can allow attackers to overwrite memory segments.

What to do

In this scenario, an attacker could potentially exploit this opening to manipulate system memory, leading to unauthorized actions. While there's no direct evidence of exploitation yet, that doesn't mean the door should be left wide open! Upgrade your macOS to version 10.13.5 or later to patch this vulnerability. Stay vigilant by regularly checking for updates and ensuring your system is secure. You've got this! Just a quick update and you’ll be fortified against this threat. 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01288 · 70.0th 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 size validation
    cvelistv5