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Pan OsOperating system · Paloaltonetworks

CVE-2024-0011

MEDIUM · 6.1 CVSS v3.1 Published 2024-02-14
Fix available
A fix is available. Upgrade to 8.1.24 / 9.0.17 or later.
See remediation →
68/100
Remediation priority · Elevated
Remotely reachable No privileges

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
A reflected cross-site scripting (XSS) vulnerability in the Captive Portal feature of Palo Alto Networks PAN-OS software enables execution of malicious JavaScript (in the context of an authenticated Captive Portal user’s browser) if a user clicks on a malicious link, allowing phishing attacks that could lead to credential theft.

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

A reflected cross-site scripting (XSS) vulnerability exists in the Captive Portal feature of Palo Alto Networks PAN-OS software. The vulnerability allows injection of malicious JavaScript through a crafted URL, which executes in the context of an authenticated Captive Portal user's browser when they click on the malicious link.

MitigationApply available PAN-OS updates/patches for CVE-2024-0011. As a temporary mitigation, implement URL filtering or WAF rules to detect and block malicious payloads in Captive Portal URLs, and educate users about not clicking untrusted links.

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
Pan OsOperating system
Affected:>= 8.1.0, < 8.1.24>= 9.0.0, < 9.0.17>= 9.1.0, < 9.1.13>= 10.0.0, < 10.0.11>= 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
None
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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. Check PAN-OS version
    Run 'show system info' in the PAN-OS CLI or check the web interface under Device > Summary to obtain the installed PAN-OS version number.
    Affected if The installed version falls within any of these ranges: 8.1.0 to 8.1.23, 9.0.0 to 9.0.16, 9.1.0 to 9.1.12, 10.0.0 to 10.0.10, or 10.1.0 to 10.1.2.
  2. Verify Captive Portal is enabled
    In the PAN-OS web interface, go to Network > Captive Portal or run 'show captive-portal status' in the CLI to determine if the Captive Portal feature is configured and active.
    Affected if Captive Portal is enabled and users authenticate through it.
  3. Review URL logs for XSS patterns
    In PAN-OS logs, filter Traffic or Threat logs for the Captive Portal redirect URLs and inspect query parameters for suspicious patterns such as '<script>', 'javascript:', or other HTML/JS injection attempts.
    Affected if Log entries show unexpected script tags or javascript: protocols in Captive Portal URL parameters.
  4. Check authentication logs for unusual behavior
    Examine Authentication logs or System logs around Captive Portal sessions for unexpected script executions or anomalies that may indicate XSS exploitation.
    Affected if Authentication or session logs contain evidence of injected script execution or unexpected browser-side behavior.

You are affected if your PAN-OS version is within the affected ranges listed AND Captive Portal is enabled, as the vulnerability requires both conditions to be exploitable.

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 8.1.24 / 9.0.17 / 9.1.13 or later
Fixed in 8.1.249.0.179.1.13
Interim mitigation

Apply available PAN-OS updates/patches for CVE-2024-0011. As a temporary mitigation, implement URL filtering or WAF rules to detect and block malicious payloads in Captive Portal URLs, and educate users about not clicking untrusted links.

Recommended fix High confidence

PAN-OS 8.1.24 (or later), 9.0.17 (or later), 9.1.13 (or later), or 10.0.11 (or later) depending on your current branch

  1. 1. Log in to the PAN-OS web interface or use the CLI with administrative credentials.
  2. 2. Navigate to Device > Software > Software Updates to check for available updates.
  3. 3. Download the appropriate fixed version for your current branch: 8.1.24, 9.0.17, 9.1.13, or 10.0.11 (or later).
  4. 4. Review the PAN-OS Upgrade Guide at paloaltonetworks.com for pre-upgrade checks and procedures.
  5. 5. Back up the current configuration via Device > Setup > Operations > Save named configuration snapshot.
  6. 6. Install the software update and reboot the appliance.
  7. 7. After reboot, verify the system is running the fixed version via the Dashboard or 'show system info' command.
  8. 8. Test Captive Portal functionality to confirm the fix works correctly.
Caveat Review PAN-OS release notes for your target version for any feature changes or migration considerations; major version upgrades (e.g., 9.x to 10.x) may require additional migration planning

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

Fix this in Pan Os Scoped from the published advisory
  • Consultation3.0 h
  • Implementation4.0 h
  • Testing2.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,980
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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-2024-0011 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