Horizon Alert
Summary of the vulnerability and why it matters
The Internet Information Services (IIS) WebDAV service contains a buffer overflow vulnerability. This flaw allows remote attackers to execute arbitrary code. The impact can include unauthorized code execution and potential compromise of affected systems.
- Internet Information Services (IIS) WebDAV service
- Buffer overflow in ScStoragePathFromUrl function
- Remote code execution, system compromise
Attack Path
How an attacker could exploit the issue
A buffer overflow vulnerability in the WebDAV service of Internet Information Services (IIS) 6.0 allows remote attackers to execute arbitrary code. This occurs when a specially crafted, long header is sent in a PROPFIND request, targeting the ScStoragePathFromUrl function. The exploit can result in attackers gaining control over affected systems.
- Exposed WebDAV service
- Attacker sends malformed request
- Code execution and system control
Live Threat
Current exploitation, exposure, and threat context
This vulnerability could allow attackers to execute arbitrary code on affected systems by sending a specially crafted request to the WebDAV service. This could lead to a compromise of the affected server and potential further network intrusion. Organizations should consider this a high priority for remediation.
- Attackers with moderate skill.
- Requires network access.
- High business risk and urgency.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
This critical vulnerability affects the WebDAV service within Internet Information Services (IIS) 6.0. Remote attackers can exploit a buffer overflow to execute arbitrary code. This presents a significant business risk, potentially leading to system compromise and unauthorized data access.
- Find exposed IIS 6.0 assets.
- Isolate or disable affected services.
- Apply vendor security updates.
- Verify remediation and monitor activity.
