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Hp UxOperating system · Hp

CVE-2023-30903

MEDIUM · 5.5 CVSS v3.1 Published 2023-06-16
Fix available
A fix is available. Upgrade to after 11.31 or later.
See remediation →
57/100
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
HP-UX could be exploited locally to create a Denial of Service (DoS) when any physical interface is configured with IPv6/inet6.

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 · moderate confidence

HP-UX contains a local denial-of-service vulnerability where any physical interface configured with IPv6/inet6 can be exploited to cause a system crash or service interruption. The attack is local and does not require network access.

MitigationRestrict local access to trusted users only, and evaluate whether IPv6 is required on HP-UX systems; if not needed, disable inet6 protocol to prevent exploitation.

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
Hp UxOperating system
Affected:>= 11.00, <= 11.31

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
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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. Confirm HP-UX version is within affected range
    Run 'uname -a' to display the HP-UX version. Compare the version number to the affected range 11.00 to 11.31.
    Affected if The system is running HP-UX version 11.00 through 11.31 inclusive
  2. Verify inet6 protocol is enabled
    Check if the inet6 (IPv6) protocol stack is loaded and active on the system. On HP-UX, this can be verified using 'ndd /dev/ip6 status' or by checking if the inet6 module is present in the running kernel configuration.
    Affected if The inet6/IPv6 protocol is loaded and enabled on the system
  3. Identify network interfaces configured with inet6
    Run 'netstat -in' or 'ifconfig -a' to list all network interfaces and their address families. Look for physical interfaces (such as lan0, lan1) that show inet6 addresses bound to them.
    Affected if A physical network interface is configured with an IPv6/inet6 address

A system is affected if it is running HP-UX version 11.00-11.31 AND has inet6 (IPv6) enabled AND has a physical interface configured with inet6 addresses.

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.

From vendor data
Upgrade available Upgrade to a release after 11.31
Interim mitigation

Restrict local access to trusted users only, and evaluate whether IPv6 is required on HP-UX systems; if not needed, disable inet6 protocol to prevent exploitation.

Fix this in Hp Ux Scoped from the published advisory
  • Consultation2.0 h
  • Implementation3.0 h
  • Testing2.0 h
  • Review / QA1.0 h
8.0 hours of engineering $1,420
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Scan for this in your stack

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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-2023-30903 in production — separate from our analysis above.

No notes yet

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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