Test ID:	1.3.6.1.4.1.25623.1.0.106593
Category:	CISCO
Title:	Cisco AsyncOS Software for Cisco WSA Filtering Bypass Vulnerability
Summary:	A vulnerability in the Multipurpose Internet Mail Extensions (MIME) scanner; of Cisco AsyncOS Software for Web Security Appliances (WSA) could allow an unauthenticated, remote attacker to; bypass configured user filters on the device.
Description:	Summary: A vulnerability in the Multipurpose Internet Mail Extensions (MIME) scanner of Cisco AsyncOS Software for Web Security Appliances (WSA) could allow an unauthenticated, remote attacker to bypass configured user filters on the device. Vulnerability Insight: The vulnerability is due to improper error handling of a malformed MIME header in an email attachment. An attacker could exploit this vulnerability by sending an email with a crafted MIME attachment. Vulnerability Impact: A successful exploit could allow the attacker to bypass user filters configured to prevent executable files from being opened. The malformed MIME headers may not be RFC compliant but some mail clients could still allow users to access the attachment, which may not have been properly filtered by the device. Solution: See the referenced vendor advisory for a solution. CVSS Score: 5.0 CVSS Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2017-3827 BugTraq ID: 96239 http://www.securityfocus.com/bid/96239 http://www.securitytracker.com/id/1037831 http://www.securitytracker.com/id/1037832
Copyright	Copyright (C) 2017 Greenbone AG

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