CVE-2021-42854CWE-20

Directory Traversal Read/Write/Delete at PluginServlet

Critical · published March 9, 2022

CVSS v3.1
9.8
EPSS
2%
Percentile
75.1
In the wild
Unconfirmed
What it is

🚨 A sneaky directory traversal vulnerability in SteelCentral's Dynamic Sampling Agent could let attackers access sensitive files with just a crafted API request! 🔥 Think of it like a delivery driver following an incomplete address, accidentally ending up at the wrong house and wandering into areas they shouldn't. In this case, the API bypasses security checks, allowing malicious payloads to slip through unnoticed. If exploited, an attacker could potentially read or manipulate sensitive files on the server, leading to data leaks or even full system compromise. This vulnerability is absolutely devastating because it opens the door to severe data breaches and unauthorized access with minimal effort.

Put simply

Think of it like a delivery driver following an incomplete address, accidentally ending up at the wrong house and wandering into areas they shouldn't. In this case, the API bypasses security checks, allowing malicious payloads to slip through unnoticed. The vulnerability resides in the PluginServlet of the SteelCentral AppInternals Dynamic Sampling Agent, allowing directory traversal via improper input validation on the '/api/appInternals/1.0/plugin/pmx' API endpoint.

What to do

If exploited, an attacker could potentially read or manipulate sensitive files on the server, leading to data leaks or even full system compromise. This vulnerability is absolutely devastating because it opens the door to severe data breaches and unauthorized access with minimal effort. To mitigate this risk, patch to version 10.5.0 immediately and ensure that all API inputs are properly validated to prevent directory traversal attacks. Regular security audits of your web applications are also highly recommended to catch such vulnerabilities before they can be exploited. You've got this! Implement these changes, and you'll bolster your defenses in no time. 🛡️

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
CVSS v4.0
Not supplied
EPSS
0.01568 · 75.1th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2022-03-09T16:52Z
EPSS history
Timeline
  • 09 MAR 16:52Z
    Directory Traversal Read/Write/Delete at PluginServlet
    cvelistv5