CVE-2009-4006

Stack-based buffer overflow in the TEA decoding algorithm in RhinoSoft Serv-U FTP server 7.0.0.1, 9.0.0.5, and other versions before 9.1.0.0 allows remote…

published November 20, 2009

Patch now

High probability of exploitation

NVD has not assigned a CVSS score to this record. It sits in the 99.7th percentile for exploit probability.

CVSS
—
EPSS
83%
Percentile
99.7
In the wild
Unconfirmed
What it is

⚠️ A long hexadecimal string is all it takes to exploit this stack-based buffer overflow in RhinoSoft Serv-U FTP server! 🚨 Think of it like a crowded elevator that can only hold a limited number of people. If too many folks squeeze in, it can get chaotic, leading to a complete system crash! An attacker could send a carefully crafted hexadecimal string that overflows the buffer, potentially executing arbitrary code on your server. This could give them the keys to your digital kingdom, allowing them to manipulate files, steal data, or cause server downtime.

Put simply

Think of it like a crowded elevator that can only hold a limited number of people. If too many folks squeeze in, it can get chaotic, leading to a complete system crash! The vulnerability resides in the TEA decoding algorithm in versions 7.0.0.1, 9.0.0.5, and older of the RhinoSoft Serv-U FTP server. By exploiting this buffer overflow, attackers can gain remote access and execute malicious code.

What to do

An attacker could send a carefully crafted hexadecimal string that overflows the buffer, potentially executing arbitrary code on your server. This could give them the keys to your digital kingdom, allowing them to manipulate files, steal data, or cause server downtime. Upgrade your Serv-U FTP server to version 9.1.0.0 or later to eliminate this vulnerability. Regularly audit your server configurations and monitor for suspicious activity to ensure your system remains secure. You've got this! Follow these steps to keep your FTP server safe and sound! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.82932 · 99.7th percentile
Published
2009-11-20T11:00Z
EPSS history
Timeline
  • 20 NOV 11:00Z
    Stack-based buffer overflow in the TEA decoding algorithm in RhinoSoft Serv-U FTP server 7.0.0.1, 9.0.0.5, and other versions before 9.1.0.0 allows remote…
    cvelistv5