Cisco ASR 9000 Series Aggregation Services Routers ACL Bypass Vulnerability

A vulnerability in the TCP flags inspection feature for access control lists (ACLs) on Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to bypass protection offered by a configured ACL on an affected device.

The vulnerability is due to incorrect processing of the ACL applied to an interface of an affected device when Cisco Express Forwarding load balancing using the 3-tuple hash algorithm is enabled. An attacker could exploit this vulnerability by sending traffic through an affected device that should otherwise be denied by the configured ACL. An exploit could allow the attacker to bypass protection offered by a configured ACL on the affected device.

There are workarounds that address this vulnerability.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-iosxracl

Security Impact Rating: Medium

CVE: CVE-2019-1686

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Cisco RV110W, RV130W, and RV215W Routers Management Interface Remote Command Execution Vulnerability

A vulnerability in the web-based management interface of the Cisco RV110W Wireless-N VPN Firewall, Cisco RV130W Wireless-N Multifunction VPN Router, and Cisco RV215W Wireless-N VPN Router could allow an unauthenticated, remote attacker to execute arbitrary code on an affected device.

The vulnerability is due to improper validation of user-supplied data in the web-based management interface. An attacker could exploit this vulnerability by sending malicious HTTP requests to a targeted device. A successful exploit could allow the attacker to execute arbitrary code on the underlying operating system of the affected device as a high-privilege user.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190227-rmi-cmd-ex

Security Impact Rating: Critical

CVE: CVE-2019-1663

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Cisco Small Business RV320 and RV325 Routers Information Disclosure Vulnerability

A vulnerability in the web-based management interface of Cisco Small Business RV320 and RV325 Dual Gigabit WAN VPN Routers could allow an unauthenticated, remote attacker to retrieve sensitive information.

The vulnerability is due to improper access controls for URLs. An attacker could exploit this vulnerability by connecting to an affected device via HTTP or HTTPS and requesting specific URLs. A successful exploit could allow the attacker to download the router configuration or detailed diagnostic information.

Cisco has released firmware updates that address this vulnerability. There are no workarounds that address this vulnerability.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190123-rv-info

Security Impact Rating: High

CVE: CVE-2019-1653

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Re: Adding static route in Avamar

Hello All,

I don’t know whether this is a right question to ask but as a newbie to Avamar product,I want someone to answer my question regarding adding static routes to Avamar (single node grid). is it even possible ?

We have two networks (network 1, network 2) which are isolated but recently we decided to backup all the clients from network 2 to network 1. since both the networks are segregated the networking team created a routing interface for devices in network 1 to talk to devices in network 2 and vice versa. so my question is, is it possible to add static route in (Avamar)IDPA for all the devices in network 1 to talk to devices in network 2

Note : the networking team did a ping test from all the routers (16) in network 2 to Avamar and to routing interface everything is reachable. Even the Avamar in Network 1 can reach the routing interface that’s created but cannot reach any router (16) in network 2. There are no firewalls on the routers in network 2.So what changes need to be made on Avamar/DD. Is it even possible ?

I hope this makes sense. Let me know if you have any questions. I can provide more details if needed.

Thanks in Advance

PK

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Adding static route in Avamar

Hello All,

I don’t know whether this is a right question to ask but as a newbie to Avamar product,I want someone to answer my question regarding adding static routes to Avamar (single node grid). is it even possible ?

We have two networks (network 1, network 2) which are isolated but recently we decided to backup all the clients from network 2 to network 1. since both the networks are segregated the networking team created a routing interface for devices in network 1 to talk to devices in network 2 and vice versa. so my question is, is it possible to add static route in (Avamar)IDPA for all the devices in network 1 to talk to devices in network 2

Note : the networking team did a ping test from all the routers (16) in network 2 to Avamar and to routing interface everything is reachable. Even the Avamar in Network 1 can reach the routing interface that’s created but cannot reach any router (16) in network 2. There are no firewalls on the routers in network 2.So what changes need to be made on Avamar/DD. Is it even possible ?

I hope this makes sense. Let me know if you have any questions. I can provide more details if needed.

Thanks in Advance

PK

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Placement of ProxySG in Network

I need a solution

Hello All,

This is regarding installing 2x ProxySG appliances in the network.

I’m new to ProxySG appliances, was wondering which place would be best to place ProxySG appliances in the existing network architecture; should be installed between Edge/Internet Router and Perimeter Firewall or behind the Perimeter Firewall. Current purpose of the appliance is to perform content filtering for the users.

0

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BGP route advertisement packets are getting dropped on NetScaler.


It is observed from the newnslogs that the LA/1 interface is flapping. Since LA/1 is bound to VLAN 128,when LA/1 goes down VLAN 128 also goes down.

This triggers the automatic router id selection process and this results in the BGP session is being reset. The reason for LA channel flap is below.

The VPX which had the issue is 10.236.25.73_13. When checked in xenstore_info.out [/var/shell in collector] the LA channel configuration is not found. If LA channel is configured from SVM, it will be seen in the Xenstore_info output. This value is fetched from XenServer at the time the collector was captured. If LA channel is added from VPX, it is not observed in the XenStore_info. Hence it is assumed that the LA channel was added/created at the VPX level.

On observing the VPX which was working in 10.236.25.45, it can be seen that the LA channel configuration in Xenstore_info.out.

Logs:

[jobinb@sjanalysis-1 /upload/ftp/70327476/collector_S_10.236.25.73_13Jul2015_10_31/shell]$ more xenstore_info.out vmname_mac_table = “{‘cdl128-bda01ma-wius’:[‘3a:20:0b:66:4b:0b’,’ca:9b:0d:5d…”

interface = “”

mtu = “[10/1:1500,10/2:1500]”

L2mode = “0”

dedicated = “0”

gateway = “10.236.25.1”

ip = “10.236.25.73”

netmask = “255.255.255.0”

nsvlan_id = “0”

nsvlan_intflist = “”

nsvlan_tagged = “0”

physical_intflist = “”

priv = “b84ac6745ffa4cd4819c19a3a0b9f022”

priv2 = “ce8299aad9866985ac44c430119d528854a60381941eafaabf57e2e4e437ca36eb6…”

pw = “1cb5e4e3103eee2d53c282ef0ef677de3841a6f25610d5247”

vlan_id = “0”

Priv2 = ce8299aad9866985ac44c430119d528854a60381941eafaabf57e2e4e437ca36eb69890905d912e0c57134fb4e40844c2366c56c25daff722646e505c220ebb7

Mac_interface_list = 8e_85_a3_63_f0_15-0/1,ee_82_8a_8a_ed_f5-0/2,3a_20_0b_66_4b_0b-10/1,ca_9b_0d_5d_29_1e-10/2


[jobinb@sjanalysis-1 /upload/ftp/70327476/collector_S_10.236.25.45_11Aug2015_01_44/shell]$ more xenstore_info.out | more vmname_mac_table = “{‘cdl100-bda01ma-wius’:[’42:f7:5c:c3:ca:80′,’9a:2e:09:9a…”

interface = “”

mtu = “[10/1:1500,10/2:1500,LA/1:1500]”

L2mode = “0”

dedicated = “0”

gateway = “10.236.25.1”

ip = “10.236.25.45”

netmask = “255.255.255.0”

nsvlan_id = “0”

nsvlan_intflist = “”

nsvlan_tagged = “0”

physical_intflist = “”

priv = “7831c14f1eba5d6550ccaee1e7ff2659”

priv2 = “a6b0193917bc48f68f165c69408db2a611780aa76f1005de5ae5bbd571fdb319b44…”

pw = “157bec273b3ceb5cad5a442d070864fd2306c616af58bc09c”

vlan_id = “0”

LA = “”

1 = “”

interface_list = “10/1,10/2”

mac = “00_e0_ed_44_9e_69”

type = “LACP”

Priv2 = a6b0193917bc48f68f165c69408db2a611780aa76f1005de5ae5bbd571fdb319b448e37d1d570dc49f8f2ab17336632d507727fdcc5673a504d569fa32f9aa77

Mac_interface_list = 72_01_22_66_6b_ae-0/1,ea_80_88_b2_65_73-0/2,42_f7_5c_c3_ca_80-10/1,9a_2e_09_9a_ac_94-10/2

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SD-WAN: Routes Learned by One Site using BGP Are Not Getting Installed on Another Site Over Virtual Path

Consider 3 sites : A (MCN), B (Branch) and C (Branch).

Issue : Site A is running BGP locally with a router and learning local site routes and then advertising them to Site B and Site C over the Virtual Path. However, Site B is learning those routes but Site C is not.

Symptoms : If we check the route logs from Site A, we can see that it is correctly forwarding the routes to the Virtual WAN plane as can be seen in the following :

2018-08-08 00:36:21 <INFO> <Got route notify>prefix: 10.1.1.1/32, Table: T0 new:00000000006989d8 old:00000000006f8828

2018-08-08 00:36:21 <INFO> <ADD_ROUTE_TO_Virtual WAN> prefix: 10.1.1.1/32, protocol: BGP, Router IP : 10.10.10.2, Table: T0

However, these prefixes are being ignored by Site C device as can be seen in the logs :

12994:234:661:860 ERR handle_rcvd_dynamic_routes_from_neighbor@control/route_db.c:5682 Ignore received 90 Dynamic Local Routes to SYNC from site 2 with routing domain ID 0 via Virtual_Path SiteA-SiteC, received route version:215 current:1172

The issue is not restricted between MCN and Branch only and can be seen between two branches as well.

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Citrix SD-WAN WANOP: Troubleshooting

CloudBridge Troubleshooting Guide: HA Pair Going Out of Synchronization and HA Pair Unable to Synchronize Settings for Non-CloudBridge4000/5000

CloudBridge Troubleshooting Guide: HA Failures Because of Certificate/Key Issues on Non-CloudBridge4000/5000

CloudBridge Troubleshooting Guide: Unable to Establish High Availability on CloudBridge

CloudBridge Troubleshooting Guide: Cisco Router and CloudBridge Negotiate WCCP but CloudBridge Does Not Receive Traffic for CloudBridge4000/5000

CloudBridge Troubleshooting Guide: WCCP Connections Show Under Unaccelerated Connections Table with a UR3/UR4

CloudBridge Troubleshooting Guide: Cisco Router and CloudBridge Negotiate WCCP but CloudBridge Does Not Receive Traffic for CloudBridge4000/5000

CloudBridge Troubleshooting Guide: Cisco Router does Not Respond to WCCP Messages in CloudBridge Single Cache

CloudBridge Troubleshooting Guide: Cisco Router and CloudBridge Negotiate WCCP but CloudBridge Does Not Receive Traffic for Non-CB4000/5000

CloudBridge Troubleshooting Guide: Unable to Establish High Availability on

CloudBridge Troubleshooting Guide: WCCP Clustering CloudBridge

CloudBridge Troubleshooting Guide: Unable to Successfully Configure Secure Peering with CloudBridge for Non-CloudBridge4000/5000

CloudBridge Troubleshooting Guide: Unable to Configure Secure Peering with CloudBridge for CloudBridge4000/5000

CloudBridge Troubleshooting Guide: HA Pair Going Out of Synchronization and HA Pair Unable to Synchronize Settings for Non-CloudBridge4000/5000

CloudBridge Troubleshooting Guide: Cisco Router does Not Respond to WCCP Messages in CloudBridge Single Cache

CloudBridge Troubleshooting Guide: HA Failures Because of Certificate/Key Issues on Non-CloudBridge4000/5000

CloudBridge Troubleshooting Guide: WCCP Connections Show Under Unaccelerated Connections Table with a UR3/UR4

CloudBridge Troubleshooting Guide: Cisco Router and CloudBridge Negotiate WCCP but CloudBridge Does Not Receive Traffic for Non-CloudBridge4000/5000

CloudBridge Troubleshooting Guide: WCCP Cluster

Cisco Router and CloudBridge Negotiate WCCP but CloudBridge Does Not Receive Traffic for CB4000/5000

CloudBridge Troubleshooting Guide: Unable to Successfully Join a Domain for Non-CloudBridge4000/5000

CloudBridge Troubleshooting Guide: Unable to Successfully Join a Domain for CloudBridge4000/5000

CloudBridge Troubleshooting Guide: Unable to Successfully Add Delegate User for Non-CloudBridge4000/5000

CloudBridge Troubleshooting Guide: Unable to Successfully Add Delegate User for CloudBridge4000/5000

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