Zero-day vulnerability in Windows

Buffer overflow
CVE-2006-4868

This vulnerability was reported by Sunbelt Software.

Known malware:

Bloodhound.Exploit.78

Vulnerability details

Advisory: SB2006091902 - Remote code execution in Microsoft Windows

Vulnerable component: Windows

CVE-ID: CVE-2006-4868

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C

CWE-ID: CWE-119 - Memory corruption

Description:

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

The vulnerability exists due to incorrect handling of input data in Vector Markup Language (VML) implementation (VGX.dll) in Microsoft Windows. A remote unauthenticated attacker can trick the victim to open a specially crafted web page or HTML file and execute arbitrary code on the target system with privileges of the current user.

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

Note: this vulnerability is being actively exploited.

Public Exploits:

- Microsoft Internet Explorer - 'VML' Fill Method Code Execution (MS06-055) (Metasploit) [Exploit-DB]

- Microsoft Internet Explorer - 'VML' Remote Buffer Overflow (SP2) (Perl) [Exploit-DB]

- Microsoft Internet Explorer (Windows XP SP2) - (VML) Remote Buffer Overflow [Exploit-DB]

External links:

https://www.mnin.org/write/ZERT_VML_0day.pdf
http://www.microsoft.com/technet/security/Bulletin/MS06-055.mspx
http://www.microsoft.com/technet/security/advisory/925568.mspx
https://www.symantec.com/security_response/writeup.jsp?docid=2006-092014-4640-99

About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.