CVE-2023-42000CWE-22

Arcserve UDP Agent Unauthenticated Path Traversal File Upload

Critical · published November 27, 2023

CVSS v3.1
9.8
EPSS
1%
Percentile
73.6
In the wild
Unconfirmed
What it is

🚨 A remote attacker can exploit this Arcserve UDP flaw to upload arbitrary files without even logging in! 🔥 Think of it like a delivery driver who can drop off any package at any address in a building, without needing a key or a badge — they could leave something harmful right in your server's critical areas! This vulnerability allows unauthorized users to upload any file to the server's file system. The consequences could be catastrophic, potentially leading to malicious file execution, data breaches, or even complete system takeover. Your sensitive data could be at the mercy of any attacker who discovers this flaw!

Put simply

Think of it like a delivery driver who can drop off any package at any address in a building, without needing a key or a badge — they could leave something harmful right in your server's critical areas! The path traversal vulnerability in Arcserve UDP allows unauthenticated remote attackers to exploit the `FileHandlingServlet.doUpload()` method, letting them upload files to any location on the system where the UDP agent is installed.

What to do

This vulnerability allows unauthorized users to upload any file to the server's file system. The consequences could be catastrophic, potentially leading to malicious file execution, data breaches, or even complete system takeover. Your sensitive data could be at the mercy of any attacker who discovers this flaw! To protect your system, immediately upgrade to Arcserve UDP version 9.2 or later. Ensure that your security policies are also updated to monitor and restrict file uploads from untrusted sources. It’s vital to conduct a thorough audit of your installation to check for any potential exploits. You've got this! By taking these steps, you’ll lock down your system like a pro! 🛡️

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
0.01471 · 73.6th percentile
Weakness
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published
2023-11-27T16:55Z
EPSS history
Timeline
  • 27 NOV 16:55Z
    Arcserve UDP Agent Unauthenticated Path Traversal File Upload
    cvelistv5