CVE-2023-34473Public exploit

Root code execution via hard-coded HMAC secret

Published Jul 5, 2023 · Updated Nov 21, 2024

Use of hard-coded credentials in AMI MegaRAC SP-X 12.0 before 12.2 allows remote authenticated users to execute code as root via backup restoration. RestoreConfFile's VerifyFileIntegrity accepts a crafted backup when its trailer matches an HMAC-SHA1 derived from secrets embedded in libBackupConf.so. An administrator must restore the file; accepted Bash-script changes execute as root and can compromise BMC confidentiality, integrity, and availability.

CVSS severity6.6
Medium
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use of hard-coded credentials in AMI MegaRAC SP-X 12.0 before 12.2 allows remote authenticated users to execute code as root via backup restoration. RestoreConfFile's VerifyFileIntegrity accepts a crafted backup when its trailer matches an HMAC-SHA1 derived from secrets embedded in libBackupConf.so. An administrator must restore the file; accepted Bash-script changes execute as root and can compromise BMC confidentiality, integrity, and availability.

The record

CVE
CVE-2023-34473
Published
Jul 5, 2023
Updated
Nov 21, 2024
Vendor
American Megatrends International
Product
MegaRAC SP-X
Classifications
CWE-798, T1059.004
Attack vector
adjacent
Privileges
admin

Timeline

How it unfolded

  1. Jul 5, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 21, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=12.0 <12.2

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesadmin

What is affected?

American Megatrends International · MegaRAC SP-Xversion=12.0 <12.2

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.6AMICVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-798Use of Hard-coded Credentials
T1059.004Unix Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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