Test ID:	1.3.6.1.4.1.25623.1.0.106330
Category:	CISCO
Title:	Cisco IOS Software for Cisco Catalyst 6500 Series Switches and 7600 Series Routers ACL Bypass Vulnerability
Summary:	A vulnerability in the ternary content addressable memory (TCAM) share;access control list (ACL) functionality of Cisco IOS Software running on Supervisor Engine 720 and Supervisor;Engine 32 Modules for Cisco Catalyst 6500 Series Switches and Cisco 7600 Series Routers could allow an;unauthenticated, remote attacker to bypass access control entries (ACEs) in a port access control list (PACL).
Description:	Summary: A vulnerability in the ternary content addressable memory (TCAM) share access control list (ACL) functionality of Cisco IOS Software running on Supervisor Engine 720 and Supervisor Engine 32 Modules for Cisco Catalyst 6500 Series Switches and Cisco 7600 Series Routers could allow an unauthenticated, remote attacker to bypass access control entries (ACEs) in a port access control list (PACL). Vulnerability Insight: The vulnerability is due to the improper implementation of PACL logic for ACEs that include a greater than operator, a less than operator, a tcp flag, the established keyword, or the range keyword. An attacker could exploit this vulnerability by sending packets that meet one or more filter criteria through an affected device. Vulnerability Impact: A successful exploit could allow the attacker to bypass the filters defined in the PACL for a targeted system. Solution: See the referenced vendor advisory for a solution. CVSS Score: 4.3 CVSS Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2016-6422 BugTraq ID: 93404 http://www.securityfocus.com/bid/93404 Cisco Security Advisory: 20161005 Cisco IOS Software for Cisco Catalyst 6500 Series Switches and 7600 Series Routers ACL Bypass Vulnerability http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161005-catalyst http://www.securitytracker.com/id/1036954
Copyright	Copyright (C) 2016 Greenbone AG

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