Test ID:	1.3.6.1.4.1.25623.1.0.106020
Category:	JunOS Local Security Checks
Title:	Juniper Networks Junos OS mbuf Denial of Service Vulnerability
Summary:	Junos OS is prone to a DoS vulnerability by mbuf exhaustion.
Description:	Summary: Junos OS is prone to a DoS vulnerability by mbuf exhaustion. Vulnerability Insight: When an active TCP connection transitions to LAST_ACK state and the daemon connected to the socket still has more data to send, the socket could get stuck in LAST_ACK state indefinitely, using up finite mbufs and connections. Exploitation of this issue requires establishment of a TCP connection to a listening port on the router. TCP ports protected by ingress and/or control plane firewall filters are not vulnerable to this issue. However, anti-spoofing mechanisms should be employed to protect against malicious attempts to bypass existing firewall filters. Vulnerability Impact: Triggering the condition repeatedly could lead to total mbuf exhaustion, requiring a reboot or switchover of the master RE to resolve. Affected Software/OS: Junos OS 12.1, 12.3, 13.2, 13.3, 14.1 and 14.2 Solution: New builds of Junos OS software are available from Juniper. CVSS Score: 7.1 CVSS Vector: AV:N/AC:M/Au:N/C:N/I:N/A:C
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2015-5358 NETBSD Security Advisory: NetBSD-SA2015-009 http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2015-009.txt.asc http://www.securitytracker.com/id/1032842 http://www.securitytracker.com/id/1033007 http://www.securitytracker.com/id/1033915
Copyright	Copyright (C) 2015 Greenbone AG

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