CVE-2024-4840

Credential disclosure via unredacted bootstrap logging

Published May 13, 2024 · Updated Nov 20, 2025

Cleartext credential storage in Red Hat OpenStack Platform director 16.2 and 17.1 allows local users to read service passwords from logs. During undercloud deployment or upgrade, MySQL container bootstrap writes DB_ROOT_PASSWORD and RABBITMQ_CLUSTER_COOKIE values unredacted to /var/log/messages. Any account permitted to read that log can recover database and RabbitMQ credentials, and the exposure occurs even when undercloud_debug is false.

CVSS severity5.5
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext credential storage in Red Hat OpenStack Platform director 16.2 and 17.1 allows local users to read service passwords from logs. During undercloud deployment or upgrade, MySQL container bootstrap writes DB_ROOT_PASSWORD and RABBITMQ_CLUSTER_COOKIE values unredacted to /var/log/messages. Any account permitted to read that log can recover database and RabbitMQ credentials, and the exposure occurs even when undercloud_debug is false.

The record

CVE
CVE-2024-4840
Published
May 13, 2024
Updated
Nov 20, 2025
Vendor
Red Hat
Product
Red Hat OpenStack Platform
Classifications
CWE-312, T1552.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 13, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 20, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Red Hat · Red Hat OpenStack PlatformAffected versions are unavailable in this record.

Published CVSS scores

5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-312Cleartext Storage of Sensitive Information
T1552.001Unsecured Credentials: Credentials In Files

Public exploit references

No public exploit references are available in this record.

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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