Test ID:	1.3.6.1.4.1.25623.1.0.106995
Category:	CISCO
Title:	Cisco IOS Software OSPF LSA Manipulation Vulnerability
Summary:	Cisco IOS Software is affected by a vulnerability involving the Open Shortest;Path First (OSPF) Routing Protocol Link State Advertisement (LSA) database. This vulnerability could allow an;unauthenticated, remote attacker to take full control of the OSPF Autonomous System (AS) domain routing table,;allowing the attacker to intercept or black-hole traffic.
Description:	Summary: Cisco IOS Software is affected by a vulnerability involving the Open Shortest Path First (OSPF) Routing Protocol Link State Advertisement (LSA) database. This vulnerability could allow an unauthenticated, remote attacker to take full control of the OSPF Autonomous System (AS) domain routing table, allowing the attacker to intercept or black-hole traffic. Vulnerability Insight: The attacker could exploit this vulnerability by injecting crafted OSPF packets. To exploit this vulnerability, an attacker must accurately determine certain parameters within the LSA database on the target router. This vulnerability can only be triggered by sending crafted unicast or multicast OSPF LSA type 1 packets. No other LSA type packets can trigger this vulnerability. OSPFv3 is not affected by this vulnerability. Fabric Shortest Path First (FSPF) protocol is not affected by this vulnerability. Vulnerability Impact: Successful exploitation could cause the targeted router to flush its routing table and propagate the crafted OSPF LSA type 1 update throughout the OSPF AS domain. Solution: See the referenced vendor advisory for a solution. CVSS Score: 4.0 CVSS Vector: AV:N/AC:H/Au:N/C:P/I:P/A:N
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2017-6770 BugTraq ID: 100005 http://www.securityfocus.com/bid/100005 http://www.securitytracker.com/id/1039005 http://www.securitytracker.com/id/1039006 http://www.securitytracker.com/id/1039007
Copyright	Copyright (C) 2017 Greenbone AG

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