CVE-2024-34520
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 · uneditedAn authorization bypass vulnerability exists in the Mavenir SCE Application Provisioning Portal, version PORTAL-LBS-R_1_0_24_0, which allows an authenticated 'guest' user to perform unauthorized administrative actions, such as accessing the 'add user' feature, by bypassing client-side access controls.
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 confidenceAuthorization bypass vulnerability in Mavenir SCE Application Provisioning Portal where authenticated guest users can circumvent client-side access controls to perform administrative actions such as adding users. The flaw stems from trusting client-side role validation rather than enforcing server-side authorization checks.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/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 checksWork through these to decide whether this CVE applies to you.
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Identify Mavenir SCE Portal installationSearch for Mavenir SCE Application Provisioning Portal in installed applications or check running web services on common ports (8080, 8443, 443). Look for 'Mavenir' or 'SCE' in application banners or service descriptions.Affected if The Mavenir SCE Application Provisioning Portal is present and accessible on the network.
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Determine installed versionCheck the application's About page, help menu, or API endpoint for version information. Consult vendor documentation for version retrieval commands or files.Affected if The installed version cannot be verified against known patched versions, or falls within an unpatched release range.
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Verify guest user account existsCheck user management or authentication settings in the portal admin interface to confirm whether guest or unauthenticated user roles are enabled.Affected if Guest or limited user accounts are provisioned in the system.
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Test administrative function access as guest userLog in with a guest or minimal-privilege user account and attempt to access administrative functions such as user creation, role modification, or system configuration pages via direct URL access.Affected if Guest users can reach or execute administrative actions despite lacking server-side authorization for those functions.
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Inspect server-side authorization checksReview application logs or use a web proxy to observe server responses when guest users attempt admin actions. Check whether server returns 403/401 or actually processes the request.Affected if Server accepts and processes admin requests from guest users without returning authorization errors.
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Review application configuration for client-side controlsExamine the application's configuration files or JavaScript code for role-based access control logic that executes only in the browser client rather than validating permissions server-side.Affected if Authorization logic relies primarily on client-side checks (hidden UI elements, JavaScript validation) without corresponding server-side permission verification.
If the Mavenir SCE Portal is present, guest users exist, and administrative actions can be performed without server-side authorization failures, the environment is likely affected by this vulnerability.
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 dataImplement server-side enforcement of role-based access control (RBAC) and validate user permissions server-side for all administrative functions; remove reliance on client-side controls for authorization decisions.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-34520 — 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-2024-34520 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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