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Megarac Sp XOperating system · Ami

CVE-2023-3043

HIGH · 8.8 CVSS v3.1 Published 2024-01-09
Fix available
A fix is available. Upgrade to 12.7 / 13.6 or later.
See remediation →
93/100
Remediation priority · Urgent
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
AMI’s SPx contains a vulnerability in the BMC where an Attacker may cause a stack-based buffer overflow via an adjacent network. A successful exploitation of this vulnerability may lead to a loss of confidentiality, integrity, and/or availability.

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

AMI SPx Baseboard Management Controller (BMC) contains a stack-based buffer overflow vulnerability that can be exploited by an attacker with adjacent network access. The memory corruption vulnerability could allow remote code execution, leading to complete compromise of the BMC and potentially the host system.

MitigationApply vendor-supplied BMC firmware patches when available. If no patch exists, restrict network access to the BMC to trusted management networks and monitor for indicators of compromise.

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
Megarac Sp XOperating system
Affected:>= 12, < 12.7>= 13, < 13.6

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

CVSS:3.1/AV:A/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 BMC product model
    Access the BMC web interface, IPMI, or Redfish API to retrieve the product name and model information. Look for 'Ami Megarac Sp X' or similar AMI BMC branding.
    Affected if The product is not Ami Megarac Sp X, then this CVE does not apply
  2. Retrieve BMC firmware version
    Use the BMC web interface, IPMI command 'ipmitool -I lanplus -H <BMC_IP> -U <user> -P <pass> raw', or Redfish API endpoint '/redfish/v1/Managers/Self' to obtain the installed firmware version string.
    Affected if Unable to retrieve firmware version - cannot determine vulnerability status
  3. Compare version against affected ranges
    Parse the firmware version number and compare: it is affected if (version >= 12.0 AND version < 12.7) OR (version >= 13.0 AND version < 13.6). Note any minor version numbers in the release.
    Affected if Installed version falls within 12.x where x >= 0 and < 7, or 13.x where x >= 0 and < 6
  4. Assess BMC network exposure
    Verify whether the BMC management interface is accessible from network segments accessible to untrusted users. Check firewall rules, VLAN configuration, and management network isolation.
    Affected if BMC is accessible from untrusted adjacent networks (attack vector requires adjacent network access)

User is affected if the BMC runs Ami Megarac Sp X firmware version 12.x before 12.7 or 13.x before 13.6, and the BMC network interface is reachable from the attacker's network segment.

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 12.7 / 13.6 or later
Fixed in 12.713.6
Interim mitigation

Apply vendor-supplied BMC firmware patches when available. If no patch exists, restrict network access to the BMC to trusted management networks and monitor for indicators of compromise.

Recommended fix Moderate confidence

Megarac SPx firmware version 12.7 or later (for 12.x branch); version 13.6 or later (for 13.x branch)

  1. 1. Identify the current Megarac SPx firmware version by accessing the BMC web interface or via IPMI command: ipmitool mc info
  2. 2. Download the appropriate fixed firmware version (12.7 or later for 12.x branch, 13.6 or later for 13.x branch) from the AMI/Megarac vendor portal or your server hardware vendor
  3. 3. Access the BMC firmware update interface (typically under Maintenance > Firmware Update in the web UI)
  4. 4. Upload the downloaded firmware image file to the BMC
  5. 5. Initiate the firmware update and wait for the upload and flash process to complete
  6. 6. After flashing, the BMC will typically auto-reboot; verify the new version is installed by checking the firmware version again
  7. 7. Verify that the vulnerability is no longer present by confirming the updated version
Caveat BMC firmware updates carry risk of bricking the board if interrupted; ensure stable power and follow vendor update procedures exactly

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

Fix this in Megarac Sp X Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing12.0 h
  • Review / QA4.0 h
28.0 hours of engineering $4,760
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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-2023-3043 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