OpenVPN Access Server 2.10 and prior versions are susceptible to resending multiple packets in a response to a reset packet sent from the client which the client again does not respond to, resulting in a limited amplification attack.

jenkins: UDP multicast/broadcast service amplification reflection attack

Jenkins 2.218 and earlier, LTS 2.204.1 and earlier was vulnerable to a UDP amplification reflection denial of service attack on port 33848.

unbound: amplification of an incoming query into a large number of queries directed to a target

Unbound before 1.10.1 has Insufficient Control of Network Message Volume, aka an "NXNSAttack" issue. This is triggered by random subdomains in the NSDNAME in NS records.

unbound: incomplete fix for CVE-2020-12662 in RHEL7

An incomplete fix for CVE-2020-12662 was shipped for Unbound in Red Hat Enterprise Linux 7, as part of erratum RHSA-2020:2414. Vulnerable versions of Unbound could still amplify an incoming query into a large number of queries directed to a target, even with a lower amplification ratio compared to versions of Unbound that shipped before the mentioned erratum. This issue is about the incomplete fix for CVE-2020-12662, and it does not affect upstream versions of Unbound.

python-os-vif: Hard-coded MAC aging time of 0 disables MAC learning in linuxbridge

In OpenStack os-vif 1.15.x before 1.15.2, and 1.16.0, a hard-coded MAC aging time of 0 disables MAC learning in linuxbridge, forcing obligatory Ethernet flooding of non-local destinations, which both impedes network performance and allows users to possibly view the content of packets for instances belonging to other tenants sharing the same network. Only deployments using the linuxbridge backend are affected. This occurs in PyRoute2.add() in internal/command/ip/linux/impl_pyroute2.py.

nbdkit: denial of service due to premature opening of back-end connection

A denial of service vulnerability was discovered in nbdkit 1.12.7, 1.14.1 and 1.15.1. An attacker could connect to the nbdkit service and cause it to perform a large amount of work in initializing backend plugins, by simply opening a connection to the service. This vulnerability could cause resource consumption and degradation of service in nbdkit, depending on the plugins configured on the server-side.

drybjed ansible-ntp main.yml amplification

A vulnerability, which was classified as problematic, has been found in drybjed ansible-ntp. Affected by this issue is some unknown functionality of the file meta/main.yml. The manipulation leads to insufficient control of network message volume. The attack can only be done within the local network. The complexity of an attack is rather high. The exploitation is known to be difficult. The patch is identified as ed4ca2cf012677973c220cdba36b5c60bfa0260b. It is recommended to apply a patch to fix this issue. VDB-217190 is the identifier assigned to this vulnerability.

avahi: DNS amplification and reflection to spoofed addresses

DO NOT USE THIS CANDIDATE NUMBER. ConsultID: CVE-2017-6519. Reason: This candidate is a duplicate of CVE-2017-6519. Notes: All CVE users should reference CVE-2017-6519 instead of this candidate. All references and descriptions in this candidate have been removed to prevent accidental usage