CVE-2009-4873

Stack-based buffer overflow in the HTTP server in Rhino Software Serv-U Web Client 9.0.0.5 allows remote attackers to cause a denial of service (server crash)…

published May 26, 2010

CVSS
—
EPSS
21%
Percentile
97.5
In the wild
Unconfirmed
What it is

⚠️ A long session cookie is all it takes to crash the server! This stack-based buffer overflow in Rhino Software Serv-U Web Client 9.0.0.5 can let remote attackers wreak some havoc. 🔥 Think of this vulnerability as a restaurant that agrees to take orders too long without verifying them. When a customer sends an oversized order, it overwhelms the kitchen and causes the whole place to crash, leaving everyone hungry and frustrated! This means that an attacker could potentially bring your server to a standstill, or even worse, run arbitrary code on it! The resulting denial of service could leave your clients unable to access their data, causing a big mess that no one wants to deal with.

Put simply

Think of this vulnerability as a restaurant that agrees to take orders too long without verifying them. When a customer sends an oversized order, it overwhelms the kitchen and causes the whole place to crash, leaving everyone hungry and frustrated! The vulnerability stems from a stack-based buffer overflow in the HTTP server of Rhino Software Serv-U Web Client 9.0.0.5. This occurs when it improperly handles long session cookies, which can be exploited to crash the server or execute malicious code.

What to do

This means that an attacker could potentially bring your server to a standstill, or even worse, run arbitrary code on it! The resulting denial of service could leave your clients unable to access their data, causing a big mess that no one wants to deal with. To remediate this issue, ensure you upgrade to the latest version of the Serv-U Web Client. Additionally, review your cookie length limits and implement stringent input validation to mitigate the risk of buffer overflows. You've got this! Follow the steps, patch up, and keep your server safe and sound! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.20553 · 97.5th percentile
Published
2010-05-26T18:00Z
EPSS history
Timeline
  • 26 MAY 18:00Z
    Stack-based buffer overflow in the HTTP server in Rhino Software Serv-U Web Client 9.0.0.5 allows remote attackers to cause a denial of service (server crash)…
    cvelistv5