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Vigil@nce: Windows, buffer overflow of UpdateFrameTitleForDocument

July 2010 by Vigil@nce

This bulletin was written by Vigil@nce : http://vigilance.fr/

SYNTHESIS OF THE VULNERABILITY

An attacker can invite the victim to open a document with an application which changes the title of the window with UpdateFrameTitleForDocument(), in order to execute code on his computer.

- Severity: 1/4
- Creation date: 06/07/2010

DESCRIPTION OF THE VULNERABILITY

The mfc42.dll library provides the class CFrameWnd, containing the UpdateFrameTitleForDocument() method which changes the name of the window: public void UpdateFrameTitleForDocument(LPCTSTR lpszDocName);

However, if the lpszDocName parameter is too long, a buffer overflow occurs. This overflow leads to code execution with privileges of the current user.

A remote attacker cannot directly exploit this vulnerability. However, some applications such as Trident Software PowerZip change the title from data coming from an untrusted source (a ZIP file in this case).

An attacker can therefore invite the victim to open a document with an application which changes the title of the window with UpdateFrameTitleForDocument(), in order to execute code on his computer.

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

http://vigilance.fr/vulnerability/W...




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