CVE-2023-33508

KramerAV VIA GO² < 4.0.1.1326 is vulnerable to unauthenticated file upload resulting in Remote Code Execution (RCE)

Critical · published May 31, 2023

CVSS v3.1
9.8
EPSS
1%
Percentile
72.5
In the wild
Unconfirmed
What it is

🚨 An unauthenticated file upload is the entire exploit here! KramerAV VIA GO² versions below 4.0.1.1326 allow attackers to upload malicious files with zero authentication—like a delivery person dropping off a package without checking who it’s for! 🔥 Think of it like a restaurant where anyone can drop off a suspicious dish without any verification—once it’s in the kitchen, the chefs (or the servers in this case) have no idea it could be laced with something harmful. That’s how easily an attacker can gain control here! An attacker could upload malicious code and gain remote control of your server, leading to potentially catastrophic outcomes. We're talking about the ability to read, modify, or delete sensitive data, and even a complete takeover of your system! This threat is devastating, as it allows complete access without any password or verification needed.

Put simply

Think of it like a restaurant where anyone can drop off a suspicious dish without any verification—once it’s in the kitchen, the chefs (or the servers in this case) have no idea it could be laced with something harmful. That’s how easily an attacker can gain control here! This vulnerability in KramerAV VIA GO² allows for unauthenticated file uploads, which can lead to Remote Code Execution (RCE). Essentially, it means the system trusts any file it receives without proper checks, opening the door for attackers to run their own code.

What to do

An attacker could upload malicious code and gain remote control of your server, leading to potentially catastrophic outcomes. We're talking about the ability to read, modify, or delete sensitive data, and even a complete takeover of your system! This threat is devastating, as it allows complete access without any password or verification needed. To protect yourself, update your KramerAV VIA GO² software to version 4.0.1.1326 or later immediately. Make sure to implement file validation checks to ensure only authorized files can be uploaded. Additionally, review your system’s security policies to prevent similar vulnerabilities in the future. You've got this! Follow these steps and you'll fortify 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
0.01412 · 72.5th percentile
Published
2023-05-31T00:00Z
EPSS history
Timeline
  • 31 MAY 00:00Z
    KramerAV VIA GO² < 4.0.1.1326 is vulnerable to unauthenticated file upload resulting in Remote Code Execution (RCE)
    cvelistv5