Prisma AccessApplication · Paloaltonetworks

CVE-2021-3061

HIGH · 7.2 CVSS v3.1 Published 2021-11-10
Fix available
A fix is available. Upgrade to 10.0.8 / 10.1.3 or later.
See remediation →
78/100
Remediation priority · High
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
An OS command injection vulnerability in the Palo Alto Networks PAN-OS command line interface (CLI) enables an authenticated administrator with access to the CLI to execute arbitrary OS commands to escalate privileges. This issue impacts: PAN-OS 8.1 versions earlier than PAN-OS 8.1.20-h1; PAN-OS 9.0 versions earlier than PAN-OS 9.0.14-h3; PAN-OS 9.1 versions earlier than PAN-OS 9.1.11-h2; PAN-OS 10.0 versions earlier than PAN-OS 10.0.8; PAN-OS 10.1 versions earlier than PAN-OS 10.1.3. Prisma Access customers that have Prisma Access 2.1 firewalls are impacted by this issue.

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

An OS command injection vulnerability in the Palo Alto Networks PAN-OS CLI allows an authenticated administrator with CLI access to execute arbitrary OS commands with elevated privileges, enabling privilege escalation.

MitigationUpgrade PAN-OS to the fixed versions (8.1.20-h1, 9.0.14-h3, 9.1.11-h2, 10.0.8, 10.1.3 or later) or apply the corresponding patches to remediate this vulnerability.

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
Prisma AccessApplication
Affected:= 2.1
Pan OsOperating system
Affected:>= 8.1.0, <= 8.1.20>= 9.0.0, <= 9.0.14>= 9.1.0, <= 9.1.11>= 10.0.0, < 10.0.8>= 10.1.0, < 10.1.3

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
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:H/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 PAN-OS version
    Log into the PAN-OS CLI as an administrator and run the command: `show system info` or `show version`. This displays the installed PAN-OS version number.
    Affected if The displayed version falls within these ranges: 8.1.0 through 8.1.20, 9.0.0 through 9.0.14, 9.1.0 through 9.1.11, 10.0.0 through 10.0.7, or 10.1.0 through 10.1.2.
  2. Identify Prisma Access version
    If the device is running Prisma Access, check the version through the Prisma Access dashboard or by running: `show system info` in the PAN-OS management CLI.
    Affected if The installed Prisma Access version is exactly 2.1.
  3. Verify CLI administrator access exists
    Review the admin user configuration by running: `show admin` or checking the Administrator settings in the PAN-OS web interface under Device > Administrators. Confirm whether any administrator accounts have CLI access enabled.
    Affected if Any administrator account exists with CLI access privileges, and the PAN-OS version is in the affected range listed above.
  4. Check for unexpected privileged commands
    Review system logs and audit logs for any CLI commands that executed with elevated privileges. Run: `show log system` or `show log audit` and look for commands containing shell operators (such as `;`, `|`, or `$`) that may indicate command injection attempts.
    Affected if Logs show CLI commands with shell operators or arbitrary OS command execution from an administrator session, and the version is in the affected range.
  5. Inspect for unauthorized privilege escalation
    Check for any unexpected changes to user privileges or the creation of new administrative accounts. Use: `show admin <username>` for each admin account, and review system logs for any `set` commands modifying privilege levels.
    Affected if Unexpected administrative accounts appear, or privilege level modifications occurred without documented change requests, and the PAN-OS version is affected.

The environment is affected if the installed PAN-OS version is 8.1.0-8.1.20, 9.0.0-9.0.14, 9.1.0-9.1.11, 10.0.0-10.0.7, 10.1.0-10.1.2, or Prisma Access 2.1, AND an administrator with CLI access exists.

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 10.0.8 / 10.1.3 or later
Fixed in 10.0.810.1.3
Interim mitigation

Upgrade PAN-OS to the fixed versions (8.1.20-h1, 9.0.14-h3, 9.1.11-h2, 10.0.8, 10.1.3 or later) or apply the corresponding patches to remediate this vulnerability.

Recommended fix High confidence

Upgrade to PAN-OS 8.1.20-h1 / 9.0.14-h3 / 9.1.11-h2 / 10.0.8 / 10.1.3 or later (or later Prisma Access version)

  1. 1. Identify the current PAN-OS or Prisma Access version by navigating to Device > Setup > Operations or using 'show system info' in the CLI
  2. 2. For PAN-OS 8.1.x: Upgrade to PAN-OS 8.1.20-h1 or later
  3. 3. For PAN-OS 9.0.x: Upgrade to PAN-OS 9.0.14-h3 or later
  4. 4. For PAN-OS 9.1.x: Upgrade to PAN-OS 9.1.11-h2 or later
  5. 5. For PAN-OS 10.0.x: Upgrade to PAN-OS 10.0.8 or later
  6. 6. For PAN-OS 10.1.x: Upgrade to PAN-OS 10.1.3 or later
  7. 7. For Prisma Access 2.1: Upgrade to a later Prisma Access version (contact Palo Alto Networks for specific migration path)
  8. 8. After upgrade, verify the fix by confirming the new version in Device > Setup > Operations
Caveat Review PAN-OS upgrade guide for potential compatibility issues with existing features and ensure backup of configuration before upgrade

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

Fix this in Prisma Access Scoped from the published advisory
  • Consultation4.0 h
  • Implementation4.0 h
  • Testing4.0 h
  • Review / QA2.0 h
14.0 hours of engineering $2,480
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Scan for this in your stack

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dbcve dependency scanner

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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-2021-3061 in production — separate from our analysis above.

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