CVE-2009-2523

The License Logging Server (llssrv.exe) in Microsoft Windows 2000 SP4 allows remote attackers to execute arbitrary code via an RPC message containing a string…

published November 11, 2009

CVSS
—
EPSS
26%
Percentile
98.0
In the wild
Unconfirmed
What it is

⚠️ A malformed RPC message is all it takes to exploit this ancient vulnerability in Microsoft Windows 2000 SP4! An attacker's cleverly crafted input could trigger chaos. 🔥 Think of this like a restaurant where a customer orders a dish without specifying it's allergies. The kitchen, trusting all orders, serves up a dangerous meal, leading to unforeseen consequences. In this case, an attacker sends a string that doesn’t end properly, causing the server to mismanage its resources! An attacker could gain full control over the server, executing arbitrary code that might lead to data breaches or system crashes. Such a vulnerability can open the door to devastating attacks, allowing unauthorized access to sensitive information or sabotaging critical services!

Put simply

Think of this like a restaurant where a customer orders a dish without specifying it's allergies. The kitchen, trusting all orders, serves up a dangerous meal, leading to unforeseen consequences. In this case, an attacker sends a string that doesn’t end properly, causing the server to mismanage its resources! This vulnerability, known as the License Logging Server Heap Overflow, occurs when the License Logging Server (llssrv.exe) processes an RPC message with a string lacking a null terminator, resulting in heap-based buffer overflow. This flaw allows malicious code execution remotely!

What to do

An attacker could gain full control over the server, executing arbitrary code that might lead to data breaches or system crashes. Such a vulnerability can open the door to devastating attacks, allowing unauthorized access to sensitive information or sabotaging critical services! To mitigate this vulnerability, ensure that any systems running Windows 2000 SP4 are upgraded to a more secure version or consider decommissioning them entirely. Regularly apply patches and evaluate your network security policies to close potential entry points for attackers. 🛡️ You've got this! Stay proactive, and this tool won’t be a threat for you. 🚀

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.26456 · 98.0th percentile
Published
2009-11-11T19:00Z
EPSS history
Timeline
  • 11 NOV 19:00Z
    The License Logging Server (llssrv.exe) in Microsoft Windows 2000 SP4 allows remote attackers to execute arbitrary code via an RPC message containing a string…
    cvelistv5