CVE-2017-7269KEV · OVERDUE

Microsoft Windows Server Buffer Overflow Vulnerability

Critical · published March 27, 2017

Patch now

Confirmed exploited, and the score agrees

CVSS calls it critical at 9.8. It is confirmed in active exploitation. It sits in the 100.0th percentile for exploit probability.

1633
days past CISA
deadline
CVSS v3.1
9.8
EPSS
100%
Percentile
100.0
In the wild
Confirmed
What it is

🔥 A single overly long header can lead to total chaos! This buffer overflow in IIS 6.0 is like a sneaky delivery that overstuffed a package, bursting at the seams and ready to cause mayhem. ⚡ Think of it like a postal delivery truck that can only hold a certain amount of packages. If someone tries to deliver one too big, it could spill over and cause a massive traffic jam, blocking everything behind it. That's exactly what happens here when the ScStoragePathFromUrl function can’t handle extra-long requests! An attacker could exploit this vulnerability to execute arbitrary code on the server, potentially gaining full control over it. This means they could access sensitive data, manipulate files, or even bring your entire service to a halt—absolutely devastating for any organization using this outdated server! 🚨

Put simply

Think of it like a postal delivery truck that can only hold a certain amount of packages. If someone tries to deliver one too big, it could spill over and cause a massive traffic jam, blocking everything behind it. That's exactly what happens here when the ScStoragePathFromUrl function can’t handle extra-long requests! This critical buffer overflow vulnerability in the ScStoragePathFromUrl function allows attackers to send a specially crafted PROPFIND request with a long header. This results in memory corruption that can be exploited to run arbitrary code on the server.

What to do

An attacker could exploit this vulnerability to execute arbitrary code on the server, potentially gaining full control over it. This means they could access sensitive data, manipulate files, or even bring your entire service to a halt—absolutely devastating for any organization using this outdated server! 🚨 Immediate action is crucial! Upgrade your server to a more secure version, as IIS 6.0 is no longer supported. Additionally, consider disabling the WebDAV service if it’s not in use, and review your security protocols to mitigate future risks. 🔥 You've got this! By following these steps, you'll reclaim your security hero status and keep your systems safe! 🛡️

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
0.99823 · 100.0th percentile
Published
2017-03-27T01:55Z
KEV added
2021-11-03 · due 2022-05-03
EPSS history
Timeline
  • 03 NOV 00:00Z
    Added to CISA KEV — remediate by May 3
    kev
  • 27 MAR 01:55Z
    Buffer overflow in the ScStoragePathFromUrl function in the WebDAV service in Internet Information Services (IIS) 6.0 in Microsoft Windows Server 2003 R2…
    cvelistv5