dbcve.org
NetbackupApplication · Veritas

CVE-2023-28758

HIGH · 7.1 CVSS v3.1 Published 2023-03-23
Fix available
A fix is available. Upgrade to 8.3.0.2 or later.
See remediation →
73/100
Remediation priority · Elevated
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
An issue was discovered in Veritas NetBackup before 8.3.0.2. BPCD allows an unprivileged user to specify a log file path when executing a NetBackup command. This can be used to overwrite existing NetBackup log files.

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's BPCD daemon allows unprivileged users to specify an arbitrary log file path when executing NetBackup commands. This improper input validation enables an authenticated attacker to overwrite existing NetBackup log files on the system, representing a local privilege escalation and arbitrary file write vulnerability.

MitigationUpgrade to NetBackup 8.3.0.2 or later which contains the patch for this vulnerability. As an interim control, restrict physical and network access to BPCD services and limit execution of NetBackup commands to authorized administrative personnel only.

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
NetbackupApplication
Affected:< 8.3.0.2

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
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/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 installed NetBackup version
    Run the command to display the NetBackup version installed on the system (such as 'bpgetconfig' or 'nbversion' or check the version file in the NetBackup installation directory)
    Affected if The version returned is lower than 8.3.0.2 (for example, 8.2, 8.1.x, or earlier releases)
  2. Verify BPCD daemon status
    Check whether the BPCD (NetBackup Client daemon) process is running on the system using process status commands or service status tools
    Affected if The BPCD daemon is running and accessible to unprivileged users
  3. Confirm NetBackup command execution access
    Determine if unprivileged (non-administrative) users can execute NetBackup commands or access the bpcd binary
    Affected if Unprivileged users can run NetBackup commands or interact with the BPCD service
  4. Inspect NetBackup log file permissions
    Examine the permissions and ownership of NetBackup log files in the '/usr/openv/netbackup/logs/' directory or equivalent log location
    Affected if Log files are writable by non-privileged users or have weak permissions that allow modification

You are affected if your installed NetBackup version is below 8.3.0.2 and the BPCD daemon is running with accessible command execution for unprivileged users.

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 8.3.0.2 or later
Fixed in 8.3.0.2
Interim mitigation

Upgrade to NetBackup 8.3.0.2 or later which contains the patch for this vulnerability. As an interim control, restrict physical and network access to BPCD services and limit execution of NetBackup commands to authorized administrative personnel only.

Recommended fix Moderate confidence

NetBackup 8.3.0.2 or later

  1. 1. Review the Veritas NetBackup 8.3.0.2 release notes and upgrade documentation at www.veritas.com for complete upgrade procedures
  2. 2. Ensure you have a complete backup of your NetBackup configuration and catalog before proceeding
  3. 3. Verify your current NetBackup version is below 8.3.0.2
  4. 4. Download NetBackup version 8.3.0.2 or later from the Veritas downloads portal
  5. 5. Follow Veritas standard upgrade procedures: stop all NetBackup services, run the upgrade installer, validate the installation
  6. 6. After upgrade, verify the BPCD component is updated and test that unprivileged users can no longer specify arbitrary log file paths
  7. 7. Review and reconfigure any log file permissions as needed post-upgrade
Caveat Review Veritas upgrade documentation for any compatibility considerations with your specific environment, plugins, or third-party integrations before upgrading

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

Fix this in Netbackup Scoped from the published advisory
  • Consultation3.0 h
  • Implementation6.0 h
  • Testing4.0 h
  • Review / QA2.0 h
15.0 hours of engineering $2,640
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An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,224.

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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-2023-28758 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