CVE-2009-3103

Array index error in the SMBv2 protocol implementation in srv2.sys in Microsoft Windows Vista Gold, SP1, and SP2, Windows Server 2008 Gold and SP2, and Windows…

published September 8, 2009

Patch now

High probability of exploitation

NVD has not assigned a CVSS score to this record. It sits in the 99.8th percentile for exploit probability.

CVSS
—
EPSS
92%
Percentile
99.8
In the wild
Unconfirmed
What it is

⚠️ A sneaky ampersand could put your Windows systems at risk! This vulnerability in the SMBv2 protocol allows attackers to crash your system or run arbitrary code, all from a cleverly crafted packet. 🔥 Think of it like a hotel manager who doesn’t check ID before letting someone into a restricted area — they might get access to anything behind locked doors! Here, the attacker exploits a flaw that lets them navigate out-of-bounds memory like it's the hotel's backstage pass. ✈️ If this vulnerability is exploited, an attacker could crash your system or even execute malicious code, leading to disastrous consequences. Imagine your computer suddenly freezing or doing something completely unexpected — that's your data and peace of mind on the line!

Put simply

Think of it like a hotel manager who doesn’t check ID before letting someone into a restricted area — they might get access to anything behind locked doors! Here, the attacker exploits a flaw that lets them navigate out-of-bounds memory like it's the hotel's backstage pass. ✈️ The SMBv2 protocol implementation in Microsoft Windows has an array index error that allows remote attackers to send a crafted NEGOTIATE PROTOCOL REQUEST packet. This packet contains an ampersand in a Process ID High header that triggers an out-of-bounds memory dereference, which can lead to arbitrary code execution or system crashes.

What to do

If this vulnerability is exploited, an attacker could crash your system or even execute malicious code, leading to disastrous consequences. Imagine your computer suddenly freezing or doing something completely unexpected — that's your data and peace of mind on the line! To secure your systems, ensure they are patched to the latest versions where this vulnerability is addressed. Regularly review your network security configurations and limit access to the SMB protocol from untrusted sources. Staying updated is key! 🛡️ You've got this! By taking action now, you can protect your systems from this sneaky issue. 🚀

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.92347 · 99.8th percentile
Published
2009-09-08T22:00Z
EPSS history
Timeline
  • 08 SEP 22:00Z
    Array index error in the SMBv2 protocol implementation in srv2.sys in Microsoft Windows Vista Gold, SP1, and SP2, Windows Server 2008 Gold and SP2, and Windows…
    cvelistv5