CVE-2019-8849

The issue was addressed by signaling that an executable stack is not required

published December 18, 2019

CVSS
—
EPSS
2%
Percentile
82.7
In the wild
Unconfirmed
What it is

🚨 A tiny oversight could unleash chaos! An executable stack isn’t a must-have, but it might just be the ticket for attackers to run arbitrary code in SwiftNIO applications using TLS. 🔥 Think of it like a restaurant that serves up food without checking the ingredients; if an untrustworthy chef walks in and replaces a dish with something harmful, diners could get sick. This vulnerability is that unchecked process in your code! If exploited, an attacker could execute arbitrary code, potentially compromising sensitive data and undermining the integrity of your application. The implications could range from unauthorized access to critical system functions to complete takeover of the application!

Put simply

Think of it like a restaurant that serves up food without checking the ingredients; if an untrustworthy chef walks in and replaces a dish with something harmful, diners could get sick. This vulnerability is that unchecked process in your code! This vulnerability allows a SwiftNIO application using TLS to execute arbitrary code because the system incorrectly signals that an executable stack is unnecessary. Essentially, it opens the door for attackers to run their malicious code as part of a legitimate process.

What to do

If exploited, an attacker could execute arbitrary code, potentially compromising sensitive data and undermining the integrity of your application. The implications could range from unauthorized access to critical system functions to complete takeover of the application! To mitigate this risk, immediately update your SwiftNIO SSL to version 2.4.1. Additionally, perform a thorough code review to ensure that all components are correctly configured regarding executable stacks. Don't forget to monitor your applications for unusual behavior. You've got this! By taking these steps, you'll help fortify your application against potential attacks. 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.02240 · 82.7th percentile
Published
2019-12-18T17:33Z
EPSS history
Timeline
  • 18 DEC 17:33Z
    The issue was addressed by signaling that an executable stack is not required
    cvelistv5