Zero-day vulnerability in Microsoft Office

Buffer overflow
CVE-2006-1540

Vulnerability details

Advisory: SB2006071102 - Multiple vulnerabilities in Microsoft Office

Vulnerable component: Microsoft Office

CVE-ID: CVE-2006-1540

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 user to execute arbitrary code on the target system.

The vulnerability exists due to boundary error when handling malformed strings in Office documents. A remote attacker can create a specially crafted Office file, trick the victim into opening it and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability results in compromise of vulnerable system.

Note: this vulnerability is being actively exploited.

Public Exploits:

- Microsoft Office Products - Array Index Bounds Error (Unpatched) (PoC) [Exploit-DB]

External links:

https://technet.microsoft.com/en-us/library/security/ms06-038.aspx

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.