This article describes all security-related fixes and improvements introduced in each release or update of Veeam Backup & Replication.

The goal of this article is to provide our customers' security and compliance teams with detailed information on security improvements between releases, in order to help them make an informed decision on whether it is critical to upgrade from their current Veeam Backup & Replication version to a latter one.

12.0.0.1420 P20230412

• OpenSSL Library updated to the newest version (1.0.2zg).
   

12.0.0.1420 P20230223

• Vulnerability (CVE-2023-27532) in Veeam Backup Service was fixed.
  This vulnerability was reported by Shanigen.
   

12.0.0.1420

• Added support for networks with NTLM authentication disabled (Kerberos-only authentication).
• Added Best Practices Analyzer to check product configuration.
• Audit capabilities were improved.
• Added possibility to limit the number of logon sessions per user and to log off users after an inactivity period
• SMTP certificates validation was added for email notifications
• Network communication between CDP components is encrypted with TLS
• Disabled insecure TLS protocols in communication with VMware infrastructure
• zlib has been updated to version 1.2.13
• OpenSSL version has been updated to 1.0.2ze
• Putty has been updated to version 0.76
   

11.0.1.1261 P20230227

• Vulnerability (CVE-2023-27532) in Veeam Backup Service was fixed.
  This vulnerability was reported by Shanigen.
   

11.0.1.1261 P20220302

• Vulnerabilities (CVE-2022-26500, CVE-2022-26501) in Veeam Distribution Service were fixed.
  These vulnerabilities were reported by Nikita Petrov (Positive Technologies).
  
• Vulnerability (CVE-2022-26504) in Veeam.Backup.PSManager was fixed.
• Vulnerability (CVE-2022-26503) in Veeam Agent for Microsoft Windows was fixed.
  This vulnerability was reported by Nikita Petrov (Positive Technologies).
   

11.0.1.1261

• Linux data mover: Added support for ECDHE TLS cipher suites; improved transport security.
• Veeam Backup Enterprise Manager: hardened HTTP header configuration; disabled HTTP Trace method; restricted an ability to log into the Self-Service Restore Portal under NETWORK SERVICE accounts (the portal was dysfunctional for such logins).
• Helper appliances: updated OpenVPN to version 2.4.11; updated OpenSSH to version 8.6.
• Debug logs: Addressed issues which could result in sensitive information logged under certain circumstances.
   

11.0.0.837 P20210507

• Vulnerability (CVE-2021-35971) in the deserialization logic of Microsoft .NET remoting has been fixed.
   

11.0.0.837

• .NET remoting communication security has been improved.
  
• Data Mover communication protocol security has been improved.
• Agent Management architecture security has been improved.
• Veeam Explorers integration security has been improved
• Veeam Backup Enterprise Manager Web App configuration and headers security has been improved.
• Addressed issues which could cause sensitive information logged in certain circumstances.
• Third-party libraries in FLR and SureBackup helper appliance have been updated to current versions.
• Sustansys.Saml2 has been updated to version 2.7 to address known vulnerabilities.
• LZ4 compression library version has been updated to version 1.9.2
   

10.0.1.4854 P20220304

• Vulnerabilities (CVE-2022-26500, CVE-2022-26501) in Veeam Distribution Service were fixed.
  These vulnerabilities were reported by Nikita Petrov (Positive Technologies).
  
• Vulnerability (CVE-2022-26504) in Veeam.Backup.PSManager was fixed.
• Vulnerability (CVE-2022-26503) in Veeam Agent for Microsoft Windows was fixed.
  This vulnerability was reported by Nikita Petrov (Positive Technologies).
   

10.0.1.4854 P20210609

• Vulnerability (CVE-2021-35971) in the deserialization logic of Microsoft .NET remoting has been fixed.
   

10.0.1.4854

• NAS Backup functionality can be used to gain unprivileged access to files on managed servers.
• Weak credentials encryption issue in guest processing command line parameter and in PowerShell cmdlet logs.
• Server and IIS version information is included in the response header of the Veeam Backup Enterprise Manager web app.
• Security of Agent Management architecture has been improved.
• Security of Cloud Connect architecture has been improved.
• libcurl version has been updated to 7.70
   

10.0.0.4461

• A custom security descriptor was provided for the driver's control device (vulnerability reported by Mile Karry).
• Deserialization issues were fixed (vulnerability reported by Harrison Neal).
• A user authorization issue was fixed (vulnerability reported by Harrison Neal).
• Security of the Enterprise Manager Web App configuration was improved.
• Support for weak SSH ciphers was disabled in the recovery media ISOs.
• OpenSSL library was updated to version 1.0.2t
• Putty was updated to version 0.73
• Weak TLS ciphers were disabled in the Surebackup Linux appliance.

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