CVE-2021-45690

An issue was discovered in the messagepack-rs crate through 2021-01-26 for Rust

published December 26, 2021

CVSS
—
EPSS
1%
Percentile
68.7
In the wild
Unconfirmed
What it is

💡 A crafty quirk in the messagepack-rs crate lets deserialize_binary peek into uninitialized memory! Think of it like an unmarked box in a warehouse — you don’t know what’s inside until someone opens it. This vulnerability could lead to unexpected data leaks, much like discovering a surprise package full of mysterious contents! If exploited, an attacker could access sensitive information residing in unallocated memory spaces, potentially leading to data exposure or corruption. While this isn’t a direct breach, the unpredictability can still create chaos!

Put simply

Think of it like an unmarked box in a warehouse — you don’t know what’s inside until someone opens it. This vulnerability could lead to unexpected data leaks, much like discovering a surprise package full of mysterious contents! This vulnerability stems from the deserialize_binary function in messagepack-rs, which may read from uninitialized memory, leading to unintended data exposure. This means that when deserializing data, it doesn’t properly clear out memory, revealing whatever was there before.

What to do

If exploited, an attacker could access sensitive information residing in unallocated memory spaces, potentially leading to data exposure or corruption. While this isn’t a direct breach, the unpredictability can still create chaos! To mitigate this risk, ensure you update the messagepack-rs crate to the latest secure version. Also, review your usage of the deserialize_binary function and implement additional checks to handle uninitialized memory safely. Regularly audit your dependencies for potential vulnerabilities! You've got this! With a little diligence, you can keep your Rust applications safe and sound. 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01230 · 68.7th percentile
Published
2021-12-26T21:51Z
EPSS history
Timeline
  • 26 DEC 21:51Z
    An issue was discovered in the messagepack-rs crate through 2021-01-26 for Rust
    cvelistv5