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Test Kennung:
Kategorie:JunOS Local Security Checks
Titel:Junos mbuf Denial of Service Vulnerability
Zusammenfassung:Junos OS is prone to a DoS vulnerability by mbuf exhaustion.
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

New builds of Junos OS software are available from Juniper.

CVSS Score:

CVSS Vector:

Querverweis: Common Vulnerability Exposure (CVE) ID: CVE-2015-5358
NETBSD Security Advisory: NetBSD-SA2015-009
CopyrightThis script is Copyright (C) 2015 Greenbone Networks GmbH

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