Big Iq Centralized ManagementApplication · F5
CVE-2021-23006
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 · uneditedOn all 7.x and 6.x versions (fixed in 8.0.0), undisclosed BIG-IQ pages have a reflected cross-site scripting vulnerability. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.
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 · moderate confidenceReflected cross-site scripting (XSS) vulnerability in undisclosed BIG-IQ management interface pages. The vulnerability allows attackers to inject malicious scripts through crafted URLs that are reflected back in the server response without proper sanitization.
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
Big Iq Centralized ManagementApplication
>= 6.0.0, < 8.0.0CVSS 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 checksWork through these to decide whether this CVE applies to you.
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Identify installed BIG-IQ versionAccess the BIG-IQ management interface and navigate to the System > Software > Image List section, or use the command line and run 'tmsh show sys version' to retrieve the installed software version.Affected if The reported version is >= 6.0.0 and < 8.0.0, placing it within the vulnerable range.
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Verify management interface accessibilityConfirm that the BIG-IQ web management interface is accessible from network locations. Check the BIG-IQ network configuration and determine if port 443 or the management IP is exposed to untrusted networks.Affected if The management interface is accessible from networks where attackers could craft and send malicious URLs.
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Review HTTP access logs for anomalous URL patternsExamine BIG-IQ HTTP access logs (typically found in /var/log/httptraffic/ or via the Logs > HTTP Requests section in the GUI) for any unusual query parameters, especially those containing script tags, javascript:, or HTML tags that may indicate XSS probe attempts.Affected if Suspicious URL patterns with XSS payloads are found in the logs, suggesting potential exploitation attempts.
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Check for unexpected or unauthorized user sessionsReview the BIG-IQ logs for any unexpected authenticated sessions, particularly from users who should not have access or from IP addresses that are not recognized. Look in System > Logs > Audit for authentication events.Affected if Audit logs show unauthorized access or session anomalies that could indicate successful XSS exploitation leading to session hijacking.
A user is affected if their BIG-IQ version is between 6.0.0 and 8.0.0 and the management interface is network-accessible to potential attackers who could inject malicious scripts through crafted URLs.
Generated from the published advisory. Verify against your own configuration.
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 data8.0.0
Upgrade BIG-IQ to version 8.0.0 or later. Until upgraded, implement input validation and output encoding on web application endpoints, and consider deploying a WAF to filter malicious requests.
Fix this in Big Iq Centralized Management
Scoped from the published advisory
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,176.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-23006 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2021-23006 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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
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