CVE-2023-35784

A double free or use after free could occur after SSL_clear in OpenBSD 7.2 before errata 026 and 7.3 before errata 004, and in LibreSSL before 3.6.3 and 3.7.x…

published June 16, 2023

CVSS
—
EPSS
1%
Percentile
60.6
In the wild
Unconfirmed
What it is

⚠️ A double free or use-after-free vulnerability is lurking in OpenBSD and LibreSSL! This means that improper memory management could lead to some unexpected behavior! Think of it like trying to serve the same dish in a restaurant twice to different tables without resetting the order—one table might end up with half the meal they expected, leading to confusion and chaos in the kitchen. In this case, an attacker could potentially exploit this memory mishap to cause crashes or unpredictable behavior in the affected systems. While the severity is currently rated as unknown, the implications of memory management flaws can be far-reaching, so caution is key!

Put simply

Think of it like trying to serve the same dish in a restaurant twice to different tables without resetting the order—one table might end up with half the meal they expected, leading to confusion and chaos in the kitchen. This vulnerability occurs when SSL_clear in OpenBSD and LibreSSL fails to properly manage memory, allowing for a situation where memory can be freed and then accessed again, leading to instability in the application.

What to do

In this case, an attacker could potentially exploit this memory mishap to cause crashes or unpredictable behavior in the affected systems. While the severity is currently rated as unknown, the implications of memory management flaws can be far-reaching, so caution is key! If you're using OpenBSD 7.2 or 7.3 or LibreSSL below version 3.7.3, make sure to update to the appropriate errata or versions as soon as possible. Regularly audit and patch your systems to ensure you're protected against potential vulnerabilities! You've got this! Stay proactive and keep your systems secure! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00940 · 60.6th percentile
Published
2023-06-16T00:00Z
EPSS history
Timeline
  • 16 JUN 00:00Z
    A double free or use after free could occur after SSL_clear in OpenBSD 7.2 before errata 026 and 7.3 before errata 004, and in LibreSSL before 3.6.3 and 3.7.x…
    cvelistv5