CVE-2021-30856

This issue was addressed by adding a new Remote Login option for opting into Full Disk Access for Secure Shell sessions

published August 24, 2021

CVSS
—
EPSS
1%
Percentile
60.4
In the wild
Unconfirmed
What it is

⚠️ An unsandboxed app on your Mac might sneak past Privacy settings—like a sneaky guest slipping through a side door! Think of it like a hotel with strict guest access policies. If an unregistered visitor finds a service entrance, they could access areas reserved for paying guests. In this case, an app can bypass your privacy preferences just because Remote Login is enabled. This could lead to unauthorized access to sensitive data on your system, potentially putting your personal information at risk. While there's no immediate threat reported, it's important to stay vigilant as malicious actors could exploit this loophole if left unchecked.

Put simply

Think of it like a hotel with strict guest access policies. If an unregistered visitor finds a service entrance, they could access areas reserved for paying guests. In this case, an app can bypass your privacy preferences just because Remote Login is enabled. CVE-2021-30856 allows a malicious unsandboxed application to bypass macOS Privacy preferences when Remote Login is enabled, posing a risk to user data and security.

What to do

This could lead to unauthorized access to sensitive data on your system, potentially putting your personal information at risk. While there's no immediate threat reported, it's important to stay vigilant as malicious actors could exploit this loophole if left unchecked. To protect your system, ensure Remote Login is disabled unless absolutely necessary, and check for updates to macOS Big Sur, as the fix was included in version 11.3. Keeping your software up to date is key to maintaining your security! You've got this! Stay proactive and keep your Mac locked down tight! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00936 · 60.4th percentile
Published
2021-08-24T18:49Z
EPSS history
Timeline
  • 24 AUG 18:49Z
    This issue was addressed by adding a new Remote Login option for opting into Full Disk Access for Secure Shell sessions
    cvelistv5