CVE-2021-27376

An issue was discovered in the nb-connect crate before 1.0.3 for Rust

published February 18, 2021

CVSS
—
EPSS
1%
Percentile
73.1
In the wild
Unconfirmed
What it is

💡 A sneaky memory access issue in the nb-connect crate could leave your Rust applications vulnerable! Think of this like a mail carrier mixing up addresses between two houses - if the wrong address is used, packages could end up at the wrong location, potentially causing confusion or loss. In this case, it’s an invalid access to memory that could lead to unpredictable behavior in your application. If exploited, this could lead to crashes or unexpected behaviors within your Rust application, making it frustrating and unreliable for users. It's not the end of the world, but it’s definitely something you'd want to fix to maintain the integrity of your software.

Put simply

Think of this like a mail carrier mixing up addresses between two houses - if the wrong address is used, packages could end up at the wrong location, potentially causing confusion or loss. In this case, it’s an invalid access to memory that could lead to unpredictable behavior in your application. The vulnerability stems from the nb-connect crate improperly casting between `std::net::SocketAddrV4` and `std::net::SocketAddrV6` data structures, which can lead to invalid memory access in specific standard library versions.

What to do

If exploited, this could lead to crashes or unexpected behaviors within your Rust application, making it frustrating and unreliable for users. It's not the end of the world, but it’s definitely something you'd want to fix to maintain the integrity of your software. To mitigate this, upgrade your nb-connect crate to version 1.0.3 or later as soon as possible. Additionally, review your code to ensure that you’re handling `SocketAddr` structures correctly and consult the documentation for the latest best practices. You've got this! With these steps, your Rust applications will be much safer in no time! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01448 · 73.1th percentile
Published
2021-02-18T03:35Z
EPSS history
Timeline
  • 18 FEB 03:35Z
    An issue was discovered in the nb-connect crate before 1.0.3 for Rust
    cvelistv5