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Ubuntu LinuxOperating system · Canonical

CVE-2020-14651

MEDIUM · 5.5 CVSS v3.1 Published 2020-07-15
Fix available
A fix is available. Upgrade to after 8.0.20 or later.
See remediation →
61/100
Remediation priority · Elevated
Remotely reachable 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
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Roles). Supported versions that are affected are 8.0.20 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server as well as unauthorized update, insert or delete access to some of MySQL Server accessible data. CVSS 3.1 Base Score 5.5 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H).

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 · high confidence

Vulnerability in MySQL Server's Security: Roles component allows a high privileged attacker with network access to cause a denial of service (hang or crash) or gain unauthorized insert/update/delete access to some accessible data. The flaw exists in how role-based security is handled.

MitigationApply Oracle's patch for CVE-2020-14651 by upgrading MySQL Server to version 8.0.21 or later. If upgrading is not immediately feasible, restrict network access to MySQL servers and limit high-privilege account usage.

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
Ubuntu LinuxOperating system
Affected:= 16.04= 18.04= 20.04
MySQLDatabase / datastore
Affected:>= 8.0.0, <= 8.0.20
Active Iq Unified ManagerApplication
Affected:all versions
Oncommand InsightApplication
Affected:all versions
Oncommand Workflow AutomationApplication
Affected:all versions
SnapcenterApplication
Affected:all versions

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

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/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 the installed MySQL Server version
    Run `mysql --version` or log into MySQL and execute `SELECT VERSION();`
    Affected if The version is 8.0.0 through 8.0.20 inclusive
  2. Confirm MySQL is listening on network interfaces
    Check MySQL configuration files (my.cnf or my.ini) for `bind-address` settings not set to 127.0.0.1, or run `netstat -tlnp | grep 3306`
    Affected if MySQL is bound to 0.0.0.0 or a non-loopback address, making it network-accessible
  3. Determine if role-based security is in use
    Log into MySQL and query `SELECT * FROM mysql.user WHERE plugin='mysql_native_password' AND is_role='Y';` or check for roles defined with `SHOW CREATE USER` statements
    Affected if MySQL roles are defined or assigned to users (the vulnerability is in the Roles component)
  4. For Ubuntu systems, verify the installed MySQL package version
    Run `dpkg -l | grep mysql-server` or `apt-cache policy mysql-server`
    Affected if The package version corresponds to MySQL 8.0.x where x is 0 through 20
  5. For NetApp products, identify the bundled MySQL version
    Check NetApp product documentation or run `mysqld --version` within the product's MySQL installation directory
    Affected if The bundled MySQL version is 8.0.0 to 8.0.20 (NetApp lists all versions as affected)

You are affected if you run MySQL 8.0.0-8.0.20 with network accessibility and have role-based security configured, or use any NetApp product version with bundled MySQL.

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 8.0.20
Interim mitigation

Apply Oracle's patch for CVE-2020-14651 by upgrading MySQL Server to version 8.0.21 or later. If upgrading is not immediately feasible, restrict network access to MySQL servers and limit high-privilege account usage.

Fix this in Ubuntu Linux Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,930
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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-2020-14651 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