Google Picasa v3.5 - Local Buffer Overflow Vulnerability

Document Title:
===============
Google Picasa v3.5 - Local Buffer Overflow Vulnerability


References (Source):
====================
OSVDB-ID: 63817 (http://osvdb.org/show/osvdb/63817)
EDB-ID: 10489 (http://www.exploit-db.com/exploits/10489/)


Release Date:
=============
2011-06-17


Vulnerability Laboratory ID (VL-ID):
====================================
55


Product & Service Introduction:
===============================
Picasa is free photo editing software from Google that makes your pictures look great.
Sharing your best photos with friends and family is as easy as pressing a button! ss.

(from the vendors homepage: http://picasa.google.com)


Abstract Advisory Information:
==============================
Vulnerability-Lab discovered a Buffer Overflow in Picasa 3.5 created by Google.
Attacker is able to overflow the ECX register by creating a text slide with a large block of text.


Vulnerability Disclosure Timeline:
==================================
2009-12-16:	Public or Non-Public Disclosure


Discovery Status:
=================
Published


Affected Product(s):
====================

Exploitation Technique:
=======================
Local


Severity Level:
===============
Medium


Technical Details & Description:
================================
A wrong validation in the specific software module under videos allows attackers to overwrite the ECX register and crash the program.
The vulnerability/bug is detected in the folie add of the software google picasa. The vulnerability allows to crash the software stable 
but there is no EIP, EBP overwrite.


Vulnerable Modules:
			[+] Folie


Pictures: 


Proof of Concept (PoC):
=======================
The vulnerability can be exploited by local attackers & results in a stable application crash via buffer overflow.
For demonstration or reproduce ...

--- Debug Logs ---
EAX 04875910 ASCII “AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...
ECX 0000007D
EDX 00000000
EBX 049364D0 ASCII “AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...
ESP 00129C1C
EBP 00129C24
ESI 04939B50 ASCII “AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...
EDI 04878F90 ASCII “AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...”
EIP 0098C13E Picasa3.0098C13E
C 0  ES 0023 32bit 0(FFFFFFFF)
P 1  CS 001B 32bit 0(FFFFFFFF)
A 0  SS 0023 32bit 0(FFFFFFFF)
Z 0  DS 0023 32bit 0(FFFFFFFF)
S 0  FS 003B 32bit 7FFDF000(FFF)
T 0  GS 0000 NULL
D 0
O 0  LastErr ERROR_SUCCESS (00000000)
EFL 00010206 (NO,NB,NE,A,NS,PE,GE,G)
ST0 empty 23.500000000000000000
ST1 empty 19.000000000000000000
ST2 empty 19.000000000000000000
ST3 empty 0.0
ST4 empty 0.0
ST5 empty 1.0000000000000000000
ST6 empty 0.0
ST7 empty 0.0
3 2 1 0      E S P U O Z D I
FST 0020  Cond 0 0 0 0  Err 0 0 1 0 0 0 0 0  (GT)
FCW 027F  Prec NEAR,53  Mask    1 1 1 1 1 1


Solution - Fix & Patch:
=======================
N/A


Security Risk:
==============
An attacker may crash Picasa by inputting a large block of text into a slide in the slideshow maker function of Picasa. 
The security risk of the vulnerability is estimated as medium.


Credits & Authors:
==================
Vulnerability-Lab  & not exp-db rip of Connection from HackTalk ;)


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=========================
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