CVE-2019-1616: Cisco NX-OS Software Cisco Fabric Services Denial of Service Vulnerability

First published: Wed Mar 06 2019(Updated: )

A vulnerability in the Cisco Fabric Services component of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a buffer overflow, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient validation of Cisco Fabric Services packets. An attacker could exploit this vulnerability by sending a crafted Cisco Fabric Services packet to an affected device. A successful exploit could allow the attacker to cause a buffer overflow, resulting in process crashes and a DoS condition on the device. MDS 9000 Series Multilayer Switches are affected running software versions prior to 6.2(25), 8.1(1b), 8.3(1). Nexus 3000 Series Switches are affected running software versions prior to 7.0(3)I4(9) and 7.0(3)I7(4). Nexus 3500 Platform Switches are affected running software versions prior to 6.0(2)A8(10) and 7.0(3)I7(4). Nexus 3600 Platform Switches are affected running software versions prior to 7.0(3)F3(5) Nexus 7000 and 7700 Series Switches are affected running software versions prior to 6.2(22) and 8.2(3). Nexus 9000 Series Switches in Standalone NX-OS Mode are affected running software versions prior to 7.0(3)I4(9) and 7.0(3)I7(4). Nexus 9500 R-Series Line Cards and Fabric Modules are affected running software versions prior to 7.0(3)F3(5). UCS 6200, 6300, and 6400 Fabric Interconnects are affected running software versions prior to 3.2(3j) and 4.0(2a).

Credit: ykramarz@cisco.com ykramarz@cisco.com

Affected Software	Affected Version	How to fix
Cisco Nx-os	>=8.2<8.3\(1\)
Cisco MDS 9000
Cisco Nx-os	>=7.0\(3\)<7.0\(3\)i7\(4\)
Cisco Nexus 3500
Cisco Nx-os	>=7.0\(3\)i5<7.0\(3\)i7\(4\)
Cisco Nexus 3000
Cisco Nx-os	>=7.0\(3\)f3<7.0\(3\)f3\(3c\)
Cisco Nexus 3600
Cisco Nx-os	>=7.2<8.2\(3\)
Cisco Nexus 7000
Cisco Nexus 7700
Cisco Nexus 9000
Cisco Nx-os	>=7.0\(3\)f1<7.0\(3\)f3\(3c\)
Cisco Nexus 9500
Cisco Nx-os	>=7.3<8.1\(1b\)
Cisco Nx-os	>=5.2<6.2\(25\)
Cisco Nx-os	>=7.0\(3\)i4<7.0\(3\)i4\(9\)
Cisco Nx-os	>=6.2<6.2\(22\)
Cisco Nx-os	<6.2\(22\)
Cisco Nx-os	<7.0\(3\)i4\(9\)
Cisco Nx-os	>=6.0\(2\)a8<6.0\(2\)a8\(10\)
Cisco Nx-os	<=6.0\(2\)a8
Cisco Nx-os	<=7.0\(3\)i4
Cisco Nx-os	>=4.0<4.0\(2a\)
Cisco UCS 6200
Cisco Ucs 6300
Cisco Ucs 6400
Cisco Nx-os	<3.2\(3j\)
All of
Cisco Nx-os	>=8.2<8.3\(1\)
Cisco MDS 9000
All of
Cisco Nx-os	>=7.0\(3\)<7.0\(3\)i7\(4\)
Cisco Nexus 3500
All of
Cisco Nx-os	>=7.0\(3\)i5<7.0\(3\)i7\(4\)
Cisco Nexus 3000
All of
Cisco Nx-os	>=7.0\(3\)f3<7.0\(3\)f3\(3c\)
Cisco Nexus 3600
All of
Cisco Nx-os	>=7.2<8.2\(3\)
Any of
Cisco Nexus 7000
Cisco Nexus 7700
All of
Cisco Nx-os	>=7.0\(3\)i5<7.0\(3\)i7\(4\)
Cisco Nexus 9000
All of
Cisco Nx-os	>=7.0\(3\)f1<7.0\(3\)f3\(3c\)
Cisco Nexus 9500
All of
Cisco Nx-os	>=7.3<8.1\(1b\)
Cisco MDS 9000
All of
Cisco Nx-os	>=5.2<6.2\(25\)
Cisco MDS 9000
All of
Cisco Nx-os	>=7.0\(3\)i4<7.0\(3\)i4\(9\)
Cisco Nexus 3000
All of
Cisco Nx-os	>=6.2<6.2\(22\)
Any of
Cisco Nexus 7000
Cisco Nexus 7700
All of
Cisco Nx-os	<6.2\(22\)
Any of
Cisco Nexus 7000
Cisco Nexus 7700
All of
Cisco Nx-os	<7.0\(3\)i4\(9\)
Cisco Nexus 9000
All of
Cisco Nx-os	>=6.0\(2\)a8<6.0\(2\)a8\(10\)
Cisco Nexus 3500
All of
Cisco Nx-os	<=6.0\(2\)a8
Cisco Nexus 3500
All of
Cisco Nx-os	<=7.0\(3\)i4
Cisco Nexus 3000
All of
Cisco Nx-os	>=4.0<4.0\(2a\)
Any of
Cisco UCS 6200
Cisco Ucs 6300
Cisco Ucs 6400
All of
Cisco Nx-os	<3.2\(3j\)
Any of
Cisco UCS 6200
Cisco Ucs 6300
Cisco Ucs 6400

CVE-2019-1616: Cisco NX-OS Software Cisco Fabric Services Denial of Service Vulnerability

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