nmstate bug fix and enhancement update

Nmstate is a library with an accompanying command line tool that manages host networking settings in a declarative manner. Bug Fixes and Enhancements: Only a default gw is supported per device BZ1910193 SR-IOV i40e After setting SR-IOV number of VFs, nmstate reports success before VFs links are...

Juniper Junos OS DoS (JSA11097)

An improper interpretation conflict of certain data between certain software components within the Juniper Networks Junos OS devices does not allow certain traffic to pass through the device upon receipt from an ingress interface filtering certain specific types of traffic which is then being...

CVE-2020-15898

In Arista EOS malformed packets can be incorrectly forwarded across VLAN boundaries in one direction. This vulnerability is only susceptible to exploitation by unidirectional traffic ex. UDP and not bidirectional traffic ex. TCP. This affects: EOS 7170 platforms version 4.21.4.1F and below releas...

CVE-2020-15898

CVE-2020-15898 affects Arista EOS: malformed packets can be forwarded across VLAN boundaries in one direction, exploitable by unidirectional traffic (e.g., UDP). Affected: EOS X-Series and 7170 platforms with specific 4.21.x–4.24.x trains (see advisory 56). Impact is VLAN-crossing DoS-like behavi...

CVE-2020-15898

In Arista EOS malformed packets can be incorrectly forwarded across VLAN boundaries in one direction. This vulnerability is only susceptible to exploitation by unidirectional traffic ex. UDP and not bidirectional traffic ex. TCP. This affects: EOS 7170 platforms version 4.21.4.1F and below releas...

CVE-2020-26569

In EVPN VxLAN setups in Arista EOS, specific malformed packets can lead to incorrect MAC to IP bindings and as a result packets can be incorrectly forwarded across VLAN boundaries. This can result in traffic being discarded on the receiving VLAN. This affects versions: 4.21.12M and below releases...

CVE-2020-26569

In EVPN VxLAN setups in Arista EOS, specific malformed packets can lead to incorrect MAC to IP bindings and as a result packets can be incorrectly forwarded across VLAN boundaries. This can result in traffic being discarded on the receiving VLAN. This affects versions: 4.21.12M and below releases...

CVE-2020-26569

In EVPN VxLAN setups in Arista EOS, specific malformed packets can lead to incorrect MAC to IP bindings and as a result packets can be incorrectly forwarded across VLAN boundaries. This can result in traffic being discarded on the receiving VLAN. This affects versions: 4.21.12M and below releases...

Arista EOS Security Breach

Arista Networks Arista EOS is a scalable operating system for data centers and cloud network centers from Arista Networks, Inc. Arista EOS builds cloud architectures that scale to hundreds of thousands of compute and storage nodes with management and provisioning capabilities for large-scale jobs...

Arista EOS Security Breach

Arista Networks Arista EOS is a scalable operating system for data centers and cloud network centers from Arista Networks, Inc. Arista EOS builds cloud architectures that scale to hundreds of thousands of compute and storage nodes with management and provisioning capabilities for large-scale jobs...

Security Advisory 0056

Security Advisory 0056 PDF Date: December 16th, 2020 Version: 1.0 Revision | Date | Changes ---|---|--- 1.0 | December 16th, 2020 | Initial Release The CVE-ID tracking this issue: CVE-2020-15898 CVSSv3 Base Score: 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Description This advisory document...

Moderate: Red Hat Security Advisory: kernel security and bug fix update

An update for kernel is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the...

Design/Logic Flaw

When configuring stateless firewall filters in Juniper Networks EX4600 and QFX 5000 Series devices using Virtual Extensible LAN protocol VXLAN, the discard action will fail to discard traffic under certain conditions. Given a firewall filter configuration similar to: family ethernet-switching...

NetworkManager security and bug fix update

1:1.18.8-1 - Update to 1.18.8 relase - ifcfg-rh: handle '802-1x.,phase2-ca-path' rh 1841397, CVE-2020-10754 - ifcfg-rh: handle 802-1x.pin properties. 1:1.18.6-4 - ip-tunnel: set cloned-mac-address only for layer2 tunnel devices rh 1832170 1:1.18.6-3 - Update translations rh 1796852 1:1.18.6-2 -...

Speed 2 – The Poseidon Adventure – Part Two

This post is a companion to the DEF CON 28 video available here Part One is available here Issue 3: Time and Tide Wait for No VLAN As mentioned the cabin switch appeared to be the key to all our access requirements. From that we could get to the trunk network, and all those TV, VOIP, and Wi-Fi...

FreeBSD -- ure device driver susceptible to packet-in-packet attack

Problem Description: A programming error in the ure4 device driver caused some Realtek USB Ethernet interfaces to incorrectly report packets with more than 2048 bytes in a single USB transfer as having a length of only 2048 bytes. An adversary can exploit this to cause the driver to misinterpret...

How to Migrate Tenant Replicas From a Standard Switch (vSS) to a Distributed Switch (vDS)

Purpose This article documents how a Veeam Cloud Service Provider VCSP or simply SP would migrate their tenants's replicas from a virtual Standard Switch vSS to a virtual Distributed Switch vDS. Solution Part 1: Update the Hardware Plan Configuration 1. Edit the Hardware Plan used by tenants that...

Huawei Data Communication: Configuring Defense Against CHADDR Change Attacks

This parameter is used to prevent attackers from changing the CHADDR value to attack the DHCP server. Copyright C 2020 Greenbone Networks GmbH Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier:...

EvilNet - Network Attack Wifi Attack Vlan Attack Arp Attack Mac Attack Attack Revealed Etc...

Network Attack wifi attack vlan attack arp attack Mac Attack Attack revealed etc../ install : sudo pip3 install -r requirements.txt EvilNet Attack Network Scan Network Wifi Attack !https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhJfriWP5PH79tY6f...

Fedora 31 : tcpreplay (2020-256ac53cc7)

This release contains bug fixes only which includes security fixes : - Increase cache buffers size to accomodate VLAN edits 594 - Correct L2 header length to correct IP header offset 583 - Fix warnings from gcc version 10 580 - Heap Buffer Overflow in randomizeiparp 579 - Use after free in...