SB2017032801 - Remote code execution in Microsoft IIS 6.0

Description

This security bulletin contains information about 1 security vulnerability.

1) Buffer overflow (CVE-ID: CVE-2017-7269)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in ScStoragePathFromUrl() function in the WebDAV service when processing overly long HTTP header beginning with "If: <http://" in a PROPFIND request. A remote unauthenticated attacker can trigger buffer overflow and execute arbitrary code on the target system with privileges of the IIS service.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Note: this vulnerability is being actively exploited in the wild in July and August 2016.

Remediation

Install update from vendor's website.

References

• https://github.com/edwardz246003/IIS_exploit