| Finding ID |
Severity |
Title |
Description |
|
V-265485
|
High |
The NSX Tier-0 Gateway router must be configured to use encryption for border gateway protocol (BGP) routing protocol authentication. |
A rogue router could send a fictitious routing update to convince a site's perimeter router to send traffic to an incorrect or even a rogue destination. This diverted traffic could be analyzed to learn confidential information about the site's network or used to disrupt the network's ability to communicate with... |
|
V-265431
|
High |
The NSX Tier-0 Gateway router must be configured to implement message authentication for all control plane protocols. |
A rogue router could send a fictitious routing update to convince a site's perimeter router to send traffic to an incorrect or a rogue destination. This diverted traffic could be analyzed to learn confidential information about the site's network or used to disrupt the network's ability to communicate with other... |
|
V-265428
|
High |
The NSX Tier-0 Gateway router must be configured to restrict it from accepting outbound IP packets that contain an illegitimate address in the source address field by enabling Unicast Reverse Path Forwarding (uRPF). |
A malicious platform can use a compromised host in an enclave to launch cyberattacks on third parties. This is a common practice in "botnets", which are a collection of compromised computers using malware to attack other computers or networks. Distributed denial-of-service (DDoS) attacks frequently leverage IP source address spoofing to... |
|
V-265406
|
High |
The NSX Tier-0 Gateway router must be configured to use encryption for Open Shortest Path First (OSPF) routing protocol authentication. |
A rogue router could send a fictitious routing update to convince a site's perimeter router to send traffic to an incorrect or even a rogue destination. This diverted traffic could be analyzed to learn confidential information about the site's network or used to disrupt the network's ability to communicate with... |
|
V-265393
|
High |
The NSX Tier-0 Gateway router must be configured to have all inactive interfaces removed. |
An inactive interface is rarely monitored or controlled and may expose a network to an undetected attack on that interface. Unauthorized personnel with access to the communication facility could gain access to a router by connecting to a configured interface that is not in use.
If an interface is no... |
|
V-265390
|
High |
The NSX Tier-0 Gateway router must be configured to disable Protocol Independent Multicast (PIM) on all interfaces that are not required to support multicast routing. |
If multicast traffic is forwarded beyond the intended boundary, it could be intercepted by unauthorized or unintended personnel. Limiting where within the network a given multicast group's data is permitted to flow is an important first step in improving multicast security.
A scope zone is an instance of a connected... |
|
V-265444
|
Medium |
The NSX Tier-0 Gateway router must be configured to use the Border Gateway Protocol (BGP) maximum prefixes feature to protect against route table flooding and prefix de-aggregation attacks. |
The effects of prefix de-aggregation can degrade router performance due to the size of routing tables and also result in black-holing legitimate traffic. Initiated by an attacker or a misconfigured router, prefix de-aggregation occurs when the announcement of a large prefix is fragmented into a collection of smaller prefix announcements.... |
|
V-265443
|
Medium |
The NSX Tier-0 Gateway router must be configured to have Internet Control Message Protocol (ICMP) redirects disabled on all external interfaces. |
The ICMP supports IP traffic by relaying information about paths, routes, and network conditions. Routers automatically send ICMP messages under a wide variety of conditions. Redirect ICMP messages are commonly used by attackers for network mapping and diagnosis. |
|
V-265442
|
Medium |
The NSX Tier-0 Gateway router must be configured to have Internet Control Message Protocol (ICMP) mask replies disabled on all external interfaces. |
The ICMP supports IP traffic by relaying information about paths, routes, and network conditions. Routers automatically send ICMP messages under a wide variety of conditions. Mask Reply ICMP messages are commonly used by attackers for network mapping and diagnosis. |
|
V-265441
|
Medium |
The NSX Tier-0 Gateway router must be configured to have Internet Control Message Protocol (ICMP) unreachable notifications disabled on all external interfaces. |
The ICMP supports IP traffic by relaying information about paths, routes, and network conditions. Routers automatically send ICMP messages under a wide variety of conditions. Host unreachable ICMP messages are commonly used by attackers for network mapping and diagnosis. |
|
V-265432
|
Medium |
The NSX Tier-0 Gateway must be configured to use a unique password for each autonomous system (AS) with which it peers. |
If the same keys are used between External Border Gateway Protocol (eBGP) neighbors, the chance of a hacker compromising any of the BGP sessions increases. It is possible that a malicious user exists in one autonomous system who would know the key used for the eBGP session. This user would... |
|
V-265484
|
Low |
The NSX Tier-0 Gateway router must be configured to have multicast disabled if not in use. |
A compromised router introduces risk to the entire network infrastructure, as well as data resources that are accessible via the network. The perimeter defense has no oversight or control of attacks by malicious users within the network. Preventing network breaches from within is dependent on implementing a comprehensive defense-in-depth strategy,... |
|
V-265483
|
Low |
The NSX Tier-0 Gateway router must be configured to have routing protocols disabled if not in use. |
A compromised router introduces risk to the entire network infrastructure, as well as data resources that are accessible via the network. The perimeter defense has no oversight or control of attacks by malicious users within the network. Preventing network breaches from within is dependent on implementing a comprehensive defense-in-depth strategy,... |
|
V-265479
|
Low |
The NSX Tier-0 Gateway router must be configured to advertise a hop limit of at least 32 in Router Advertisement messages for IPv6 stateless auto-configuration deployments. |
The Neighbor Discovery (ND) protocol allows a hop limit value to be advertised by routers in a Router Advertisement message being used by hosts instead of the standardized default value. If a very small value was configured and advertised to hosts on the LAN segment, communications would fail due to... |
|
V-265468
|
Low |
The NSX Tier-0 Gateway router must be configured to use its loopback address as the source address for Internal Border Gateway Protocol (IBGP) peering sessions. |
Using a loopback address as the source address offers a multitude of uses for security, access, management, and scalability of the Border Gateway Protocol (BGP) routers. It is easier to construct appropriate ingress filters for router management plane traffic destined to the network management subnet since the source addresses will... |
|
V-265404
|
Low |
The NSX Tier-0 Gateway router must be configured to have the Dynamic Host Configuration Protocol (DHCP) service disabled if not in use. |
A compromised router introduces risk to the entire network infrastructure, as well as data resources that are accessible via the network. The perimeter defense has no oversight or control of attacks by malicious users within the network. Preventing network breaches from within is dependent on implementing a comprehensive defense-in-depth strategy,... |
