Unicode buffer-overflow in Zoom Player 6.00b2

2007-12-27 / 2007-12-28
Risk: High
Local: No
Remote: Yes
CWE: N/A


CVSS Base Score: 7.5/10
Impact Subscore: 6.4/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: Partial

####################################################################### Luigi Auriemma Application: Zoom Player http://www.inmatrix.com Versions: <= v6.00 beta 2 and naturally all the stable v5 versions Platforms: Windows Bug: unicode buffer-overflow Exploitation: local Date: 24 Dec 2007 Author: Luigi Auriemma e-mail: aluigi (at) autistici (dot) org [email concealed] web: aluigi.org ####################################################################### 1) Introduction 2) Bug 3) The Code 4) Fix ####################################################################### =============== 1) Introduction =============== Zoom Player is a media player for Windows which supports many formats through external filters. ####################################################################### ====== 2) Bug ====== Zoom Player is affected by an unicode buffer-overflow in the function which builds the error messages. The problem can be exploited for example through a malformed ZPL file containing a http link to a file with PLS extension which will force the program to use wsprintf for building the "Unable to play [%s]" error message. ####################################################################### =========== 3) The Code =========== http://aluigi.org/poc/zoomprayer.zpl ####################################################################### ====== 4) Fix ====== The next beta will contain the fix. ####################################################################### --- Luigi Auriemma http://aluigi.org


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