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Security Issue in Microsoft Azure Plug-In for Veeam Backup & Replication

KB ID: 4491
Product: Veeam Backup & Replication | 12
Published: 2023-09-07
Last Modified: 2023-09-07
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Issue Details

This article highlights a security-related issue in Microsoft Azure Plug-In for Veeam Backup & Replication 12.1.5.99 that may allow a user accessing the Veeam Backup & Replication server to obtain the administrator credentials of the Veeam Plug-In for Microsoft Azure backup appliance, potentially allowing an attacker to gain access to the Veeam Plug-In for Microsoft Azure appliance.

This issue explicitly affects any environment where an existing deployment of Veeam Plug-In for Microsoft Azure was upgraded to version 5a while using Microsoft Azure Plug-In for Veeam Backup & Replication version 12.1.5.99. During the appliance upgrade process, administrator credentials were requested to update the Veeam Plug-In for Microsoft Azure backup appliance's operating system from Ubuntu 18.04 LTS to Ubuntu 22.04 LTS. That Veeam Plug-In for Microsoft Azure backup appliance administrator password was stored in the Updater log file: C:\ProgramData\Veeam\Backup\Plugins\Microsoft Azure\Logs\<backup_appliance_name>\Veeam.Azure.Updater.

Solution

To address this issue, Veeam has released a new build of Microsoft Azure Plug-In for Veeam Backup & Replication.

It is advised to install this update as soon as possible.

Issue fixed starting in: Microsoft Azure Plug-In for Veeam Backup & Replication 12.1.5.106

Update Procedure

  1. Obtain Microsoft Azure Plug-In for Veeam Backup & Replication 12.1.5.106.
  2. Uninstall Microsoft Azure Plug-In for Veeam Backup & Replication 12.1.5.99.
  3. Install Microsoft Azure Plug-In for Veeam Backup & Replication 12.1.5.106.
  4. Update the password for the account used by Veeam Backup & Replication to connect to Veeam Plug-In for Microsoft Azure.
    1. Update the password in Veeam Plug-In for Microsoft Azure first.
    2. Then, update the password within Veeam Backup & Replication.

When version 12.1.5.106 of the Plug-In is installed, the Plug-In will replace the backup appliance administrator password in the existing updater log files with asterisks (*). During future update procedures, the Plug-In will log only asterisks (*) instead of the actual Veeam Plug-In for Microsoft Azure backup appliance administrator password.

If this KB article did not resolve your issue or you need further assistance with Veeam software, please create a Veeam Support Case.

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