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Netbackup Snapshot ManagerApplication · Veritas

CVE-2023-40256

CRITICAL · 9.8 CVSS v3.1 Published 2023-08-11
Fix available
A fix is available. Upgrade to after 8.3.0.2 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
A vulnerability was discovered in Veritas NetBackup Snapshot Manager before 10.2.0.1 that allowed untrusted clients to interact with the RabbitMQ service. This was caused by improper validation of the client certificate due to misconfiguration of the RabbitMQ service. Exploiting this impacts the confidentiality and integrity of messages controlling the backup and restore jobs, and could result in the service becoming unavailable. This impacts only the jobs controlling the backup and restore activities, and does not allow access to (or deletion of) the backup snapshot data itself. This vulnerability is confined to the NetBackup Snapshot Manager feature and does not impact the RabbitMQ instance on the NetBackup primary servers.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

Veritas NetBackup Snapshot Manager before 10.2.0.1 has improper certificate validation in its RabbitMQ service configuration, allowing untrusted clients to connect to the message broker. This enables tampering with backup and restore job messages and potential denial of service, though snapshot data itself remains inaccessible.

MitigationUpgrade NetBackup Snapshot Manager to version 10.2.0.1 or later, and verify that RabbitMQ is configured to require and validate client certificates for all connections.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Netbackup Snapshot ManagerApplication
Affected:<= 8.3.0.2= 9.0= 9.1= 9.1.0.1= 10.0= 10.0.0.1= 10.1= 10.1.1= 10.2

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify NetBackup Snapshot Manager installation and version
    Locate the NetBackup Snapshot Manager installation directory and find the version information file or use the product's version command. Common locations include /opt/veritas/ on Linux or C:\Program Files\Veritas on Windows.
    Affected if The installed version matches any of these: 8.3.0.2 or lower, 9.0, 9.1, 9.1.0.1, 10.0, 10.0.0.1, 10.1, 10.1.1, or 10.2
  2. Verify RabbitMQ service is in use
    Check if the RabbitMQ service or process is running on the NetBackup Snapshot Manager host. Look for the rabbitmq-server process or service.
    Affected if RabbitMQ is running as part of the NetBackup Snapshot Manager installation and the version check above shows a vulnerable version.
  3. Inspect RabbitMQ SSL/TLS certificate validation configuration
    Locate and examine the RabbitMQ configuration file (typically rabbitmq.config, advanced.config, or the SSL configuration file). Look for the ssl_options section, specifically the verify and fail_if_no_peer_cert settings.
    Affected if The SSL configuration exists but verify is set to verify_none, or fail_if_no_peer_cert is set to false, or the ca_cert file path is not configured or points to a non-existent CA bundle.
  4. Check for enabled SSL/TLS on RabbitMQ listener
    Examine the RabbitMQ listener configuration for the port used by NetBackup Snapshot Manager. Verify that SSL/TLS is enabled and that client certificate requirement is enforced.
    Affected if RabbitMQ listeners do not require client certificates or SSL is not enforced for incoming connections.

You are affected if NetBackup Snapshot Manager version is 8.3.0.2 or lower, 9.0, 9.1, 9.1.0.1, 10.0, 10.0.0.1, 10.1, 10.1.1, or 10.2 AND the RabbitMQ service is configured with weak or no client certificate validation.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to a release after 8.3.0.2
Interim mitigation

Upgrade NetBackup Snapshot Manager to version 10.2.0.1 or later, and verify that RabbitMQ is configured to require and validate client certificates for all connections.

Recommended fix High confidence

10.2.0.1

  1. Upgrade NetBackup Snapshot Manager to version 10.2.0.1 or later
  2. After upgrade, verify RabbitMQ service is functioning normally with backup and restore operations
  3. Confirm the certificate validation is properly configured for the RabbitMQ service

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Netbackup Snapshot Manager Scoped from the published advisory
  • Consultation3.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
12.0 hours of engineering $2,130
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-40256 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data