Unrated

Weak Default MySQL Credentials in Nagios XI

IdentifiersCVE-2023-47405CWE-1392

CVE-2023-47405 is a vulnerability in Nagios XI affecting at least version 5.11.1 in which the installer creates multiple MySQL database accounts with weak default credentials. According to the provided advisory context, a fresh installation creates at least three database users—nagiosxi, nagiosql, and ndoutils—using the password "n@gweb". This results in predictable, low-entropy credentials being present by default for backend database access.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

An attacker who can reach the MySQL service or otherwise obtain a path to authenticate with these database accounts may be able to log in using known default credentials and access Nagios XI backend data. Depending on the privileges assigned to those accounts and network exposure of MySQL, this could enable unauthorized reading or modification of monitoring data, configuration-related records, stored secrets in the database, or other application data, and may facilitate further compromise of the Nagios XI deployment.

Mitigation

If you can’t patch tonight, do this now.

If immediate upgrade is not possible, manually change the passwords for all Nagios XI-created MySQL users, restrict MySQL network exposure to trusted local interfaces or administrative hosts only, enforce host-based firewall controls, and audit applications and configuration files to ensure updated credentials are consistently used. Review database account privileges and reduce them to least privilege where possible.

Remediation

Patch, then assume compromise.

Upgrade Nagios XI to version 5.11.4 or later, as the advisory states that all listed vulnerabilities, including CVE-2023-47405, were mitigated in version 5.11.4. Additionally, rotate the passwords for the MySQL accounts created by Nagios XI, review their privileges, and ensure no deployments retain the default password "n@gweb" for the nagiosxi, nagiosql, or ndoutils users.

PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

ACTIVITY FEED

Recent activity

2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

2 SOURCESView more in app

ncc group researchNews

Dec 13, 2023

Technical Advisory – Multiple Vulnerabilities in Nagios XI

A weakness in Nagios XI default installation where multiple MySQL accounts are created with weak default credentials, facilitating database compromise after local access.

ncc group researchNews

Dec 13, 2023

Nagios XI Vulnerabilities Found | NCC Group

A low-severity weakness in Nagios XI installation defaults where multiple MySQL accounts are created with weak default credentials, facilitating database compromise after local host compromise.

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Exposure mapping

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Threat actor evidence

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Associated malware

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Detection signatures

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Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity