CVE-2021-24040CWE-502

Due to use of unsafe YAML deserialization logic, an attacker with the ability to modify local YAML configuration files could provide malicious input, resulting…

published September 10, 2021

CVSS
—
EPSS
17%
Percentile
97.1
In the wild
Unconfirmed
What it is

⚠️ An attacker can exploit the YAML configuration files like a chef swapping ingredients in a recipe. 🥘 With the right tweaks, they could run arbitrary code on your system! Think of your application as a restaurant kitchen. If a rogue chef can sneak in and change the recipe cards, they could end up cooking up something completely unsafe — that's what happens when YAML deserialization is mishandled! If an attacker successfully modifies these YAML files, they could execute malicious commands, effectively taking complete control of your application. It’s like handing over the keys to a locked vault and letting someone in to do whatever they please!

Put simply

Think of your application as a restaurant kitchen. If a rogue chef can sneak in and change the recipe cards, they could end up cooking up something completely unsafe — that's what happens when YAML deserialization is mishandled! This vulnerability arises from unsafe YAML deserialization logic in ParlAI, allowing attackers with access to local configuration files to inject harmful payloads, leading to remote code execution.

What to do

If an attacker successfully modifies these YAML files, they could execute malicious commands, effectively taking complete control of your application. It’s like handing over the keys to a locked vault and letting someone in to do whatever they please! Upgrade to ParlAI version 1.1.0 or later to patch this vulnerability. Additionally, implement strict controls on who can modify these configuration files to prevent unauthorized changes. Regular audits of configuration management practices can also help bolster security. You've got this! With these steps, you'll keep your kitchen safe and sound! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.17353 · 97.1th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2021-09-10T22:10Z
EPSS history
Timeline
  • 10 SEP 22:10Z
    Due to use of unsafe YAML deserialization logic, an attacker with the ability to modify local YAML configuration files could provide malicious input, resulting…
    cvelistv5