CVE-2021-23895CWE-502

Authorized deserialization of untrusted data in McAfee DBSec

Critical · published June 2, 2021

CVSS v3.1
9.0
EPSS
2%
Percentile
79.2
In the wild
Unconfirmed
What it is

🚨 A reverse shell can be crafted using just a serialized object! This makes the deserialization vulnerability in McAfee Database Security (DBSec) prior to version 4.8.2 absolutely devastating. 🔥 Think of it like a sneaky hacker sending a locked box that, once opened, not only lets them into your house but also gives them the keys to your entire property. This vulnerability allows attackers to slip in disguised as trusted visitors, gaining full admin control over the server. An attacker could exploit this weakness to establish a reverse shell, granting them administrator privileges on the DBSec server. This means they could manipulate, steal, or destroy crucial data without a hitch, leading to potentially catastrophic consequences for your security posture!

Put simply

Think of it like a sneaky hacker sending a locked box that, once opened, not only lets them into your house but also gives them the keys to your entire property. This vulnerability allows attackers to slip in disguised as trusted visitors, gaining full admin control over the server. This vulnerability arises from the deserialization of untrusted data, allowing remote authenticated attackers to send malicious Java serialized objects that execute arbitrary commands on the DBSec server.

What to do

An attacker could exploit this weakness to establish a reverse shell, granting them administrator privileges on the DBSec server. This means they could manipulate, steal, or destroy crucial data without a hitch, leading to potentially catastrophic consequences for your security posture! Immediate action is necessary: upgrade to version 4.8.2 or later to mitigate this vulnerability. Additionally, review and restrict user permissions to limit potential access for authenticated users. Implement security measures like input validation to ensure only trusted data is processed. You've got this! Fixing this vulnerability is straightforward, and taking these steps will help secure your environment. 🛡️

The record
Technical detail
CVSS v3.1
9.0 · CRITICAL
Vector
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01870 · 79.2th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2021-06-02T13:05Z
EPSS history
Timeline
  • 02 JUN 13:05Z
    Authorized deserialization of untrusted data in McAfee DBSec
    cvelistv5