CVE-2021-23555

Sandbox Bypass

Critical · published February 11, 2022

CVSS v3.1
9.8
EPSS
3%
Percentile
86.8
In the wild
Unconfirmed
What it is

🚨 A direct access loophole in vm2 before version 3.9.6 could let attackers execute arbitrary code on your host machine — talk about a code red! 🔥 Picture a restaurant where the chef accidentally left the back door wide open. Anyone could waltz in and whip up whatever they want in the kitchen, potentially ruining meals and the whole dining experience! An attacker exploiting this vulnerability could execute malicious code with full access to the host machine, leading to an absolute disaster: data breaches, system takeovers, and total chaos. Imagine the fallout of someone hijacking your kitchen and cooking up a storm of mischief!

Put simply

Picture a restaurant where the chef accidentally left the back door wide open. Anyone could waltz in and whip up whatever they want in the kitchen, potentially ruining meals and the whole dining experience! This vulnerability allows unauthorized access to host error objects generated by Node.js internals during stack trace generation in vm2, enabling an attacker to bypass the sandbox protections intended to secure the environment.

What to do

An attacker exploiting this vulnerability could execute malicious code with full access to the host machine, leading to an absolute disaster: data breaches, system takeovers, and total chaos. Imagine the fallout of someone hijacking your kitchen and cooking up a storm of mischief! Update vm2 to version 3.9.6 or later immediately to close this critical gap. Conduct a security audit to ensure no unauthorized code has been executed. Don’t forget to monitor your systems for any unusual activity post-update! You got this! Stay vigilant and secure your systems — the internet needs its heroes! 🦸‍♂️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P
CVSS v4.0
Not supplied
EPSS
0.02876 · 86.8th percentile
Published
2022-02-11T20:00Z
EPSS history
Timeline
  • 11 FEB 20:00Z
    Sandbox Bypass
    cvelistv5