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Nikon CoolPix L Series Fw1.0 - Information Disclosure Issue
From: Vulnerability Lab <research () vulnerability-lab com>
Date: Tue, 16 Jul 2013 01:09:33 +0100

Nikon CoolPix L Series Fw1.0 - Information Disclosure Issue




Common Vulnerability Scoring System:

Attractive, sturdy and easy to use, the 16-megapixel COOLPIX L27 & 25 is clever with images—so you don’t have to be. 
Simple controls and smart automatic technology deliver steady images and ensure you capture portraits with smiling 
faces and open eyes, through the NIKKOR wide-angle 5x optical zoom lens.

A large 6.7-cm (2.7-in.) LCD screen displays images with superb clarity at any time of day or night and you can 
switch to filming the action at the touch of a button, or set the camera to Easy Auto mode and capture photos 
without worrying about a thing.

(Copy of the Vendor Homepage: http://www.europe-nikon.com/en_GB/product/digital-cameras/coolpix/life/coolpix-l27 )

The Vulnerability Laboratory Research Team discovered a information disclosure issue in the Nikon CoolPix Digital 
Camera L25 with Firmware 1.0.

2013-07-16:    Public Disclosure (Vulnerability Laboratory)


Affected Products:
Product: COOLPIX L25 L27 & L28



An information disclosure issue is detected in the official Nikons Camera L Series 25, 28 & maybe others.
The information disclosure bug allows remote attackers to access sensitive information of other people, websites, 
servers or companies.

The privacy issue is located in the menu > system module when processing to save a start bild (start picture) when 
processing to boot 
the camera system. The camera allows to save a start bild (start picture) and does not remove it when processing to 
perform a format or 
firmware reset. People can access the device to watch in the short review of the start bild (start picture) the earlier 
deleted pictures. 
The device does not recognize it and stored the pictures without the possibility to delete.

In a scenario on eBay we bought from a private seller a nikon camera. He uses the camera about 2 years for his holiday 
trips and conferences.
He recognized in a mail the camera got a format and firmware reset. When the camera arrived at our location we was 
watching the into short 
review of the start bild (start picture) and saw several images of the owner.

Proof of Concept:
The information disclosure issue can be reproduced by local attackers with physical camera device access.

Steps to reproduce ...

1.   Start the Nikon L series camera
2.   Go in the camera screen mode and take a nice picture
3.   Go to System > Start Bild
4.   Choose your own picture and save it as start picture
5.   Now shutdown the camera the regular way and start it again after some secounds
6.   The image of us will be visible when the system boots
7.   When go to the Menu go to System and format the device
8.   Go to Menu again and switch to System
9.   After the format we now reset the device
10. Shutdown the Nikon Camera and take out the sd card of course
11. Restart it and go to the menu, open the start bild (start picture) module
12. Now the image of us is visible even but we did  a full hardware reset or format
13. Information Disclosure issue in Nikon L Series successful reproduced!

When the image is saved in the camera as start picture, no format & no firmware reset can remove it anymore.

To fix the vulnerability remove with the firmware reset or format all pictures from the review menu.

The security risk of the information disclosure issue is estimated as medium(-).

Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri (bkm () evolution-sec com)

The information provided in this advisory is provided as it is without any warranty. Vulnerability-Lab disclaims all 
either expressed or implied, including the warranties of merchantability and capability for a particular purpose. 
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