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# Exploit Title: Oracle Siebel CRM 8.1.1 - CSV Injection
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# Date: 2018-10-21
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# Exploit Author: Sarath Nair aka AceNeon13
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# Contact: @AceNeon13
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# Vendor Homepage: www.oracle.com
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# Software Link: http://www.oracle.com/us/products/applications/siebel/siebel-crm-8-1-1-066196.html
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# Version: Oracle Siebel CRM Version 8.1.1 and below
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# PoC Exploit: CSV Injection
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# Vulnerable URL: All CSV Export functionalities within the CRM application
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# Description: Siebel CRM application was found to be vulnerable to Excel Macro injection vulnerability,
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# in places where user input is allowed (in text form) and the input can then be exported in CSV
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# form. An attacker can change user information to include in his input a malicious excel function.
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=-2+3+cmd|' /C calc'!D
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# The function will then be executed on the victim’s machine,
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# once the victim exports the details in CSV format and opens the exported file in Microsoft Excel.
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# Impact: The vulnerability doesn’t target the web application but rather its users.
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# A hypothetical attacker could use it, in order to trick other application users into unwillingly
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# executing arbitrary malicious code, potentially leading to full a compromise of their workstation.
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# Although excel has implemented certain features to protect its users
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# (the user is asked whether he wants to execute a potentially harmful external script),
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# the user could easily assume that the content can be trusted since the file is
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# extracted from a trusted source.
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# Solution: Disable CSV export in all list applets and where CSV export is available.
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# https://docs.oracle.com/cd/E95904_01/books/Secur/siebel-security-hardening.html#c_Patch_Management_ai1029938a
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########################################
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# Vulnerability Disclosure Timeline:
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2017-November-20: Discovered vulnerability
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2017-November-23: Vendor Notification
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2017-November-29: Vendor Response/Feedback
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2018-October-04: Vendor Fix/Patch/Workaround
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2018-October-21: Public Disclosure
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########################################
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Warm regards,
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Sarath Nair |