title: Pre-auth Null pointer crash in on-premise web console
description: The login routine of the web console in the Zoom On-Premise Meeting Connector before version 4.6.239.20200613, Zoom On-Premise Meeting Connector MMR before version 4.6.239.20200613, Zoom On-Premise Recording Connector before version 3.8.42.20200905, Zoom On-Premise Virtual Room Connector before version 4.4.6344.20200612, and Zoom On-Premise Virtual Room Connector Load Balancer before version 2.5.5492.20200616 fails to validate that a NULL byte was sent while authenticating. This could lead to a crash of the login service.
problem types: Improper Input Validation
affected:
{
product: Zoom On-Premise Meeting Connector
vendor: Zoom Video Communications Inc
versions:
lessThan: 4.6.239.20200613, status: affected, version: unspecified, versionType: custom
}
{
product: Zoom On-Premise Meeting Connector MMR
vendor: Zoom Video Communications Inc
versions:
lessThan: 4.6.239.20200613, status: affected, version: unspecified, versionType: custom
}
{
product: Zoom On-Premise Recording Connector
vendor: Zoom Video Communications Inc
versions:
lessThan: 3.8.42.20200905, status: affected, version: unspecified, versionType: custom
}
{
product: Zoom On-Premise Virtual Room Connector
vendor: Zoom Video Communications Inc
versions:
lessThan: 4.4.6344.20200612, status: affected, version: unspecified, versionType: custom
}
{
product: Zoom On-Premise Virtual Room Connector Load Balancer
vendor: Zoom Video Communications Inc
versions:
lessThan: 2.5.5492.20200616, status: affected, version: unspecified, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: LOCAL
availabilityImpact: LOW
baseScore: 4
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
version: 3.1
]