Buffer Overflow Vulnerability in WebDAV Service of Microsoft IIS 6.0
CVE-2017-7269

9.8CRITICAL

Key Information:

Vendor: Microsoft
Status: Internet Information Server
Vendor: CVE Published:; 27 March 2017

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 94%🦅 CISA Reported

Summary

A buffer overflow vulnerability exists in the ScStoragePathFromUrl function of the WebDAV service in Internet Information Services (IIS) 6.0. This security flaw allows remote attackers to send specially crafted PROPFIND requests with overly long headers beginning with 'If: <http://', potentially resulting in the execution of arbitrary code on the vulnerable server. This issue has been actively exploited in the wild, making it crucial for affected users to implement necessary security measures.

CISA Reported

CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace

The CISA's recommendation is: Apply updates per vendor instructions.

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2017-7269 - Proof of Concept