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Communications Session Border ControllerApplication · Oracle

CVE-2021-2414

MEDIUM · 6.8 CVSS v3.1 Published 2021-10-20
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
74/100
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 Oracle Communications Session Border Controller product of Oracle Communications (component: Routing). Supported versions that are affected are 8.4 and 9.0. Easily exploitable vulnerability allows high privileged attacker with network access via HTTP to compromise Oracle Communications Session Border Controller. While the vulnerability is in Oracle Communications Session Border Controller, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Communications Session Border Controller accessible data. CVSS 3.1 Base Score 6.8 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N).

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

This is an authorization bypass vulnerability in the Routing component of Oracle Communications Session Border Controller (versions 8.4 and 9.0). A high-privileged attacker with network access via HTTP can exploit this to gain unauthorized access to critical data, despite the attacker needing high-level privileges. The scope is changed, meaning successful attacks may impact additional products beyond the Session Border Controller itself.

MitigationApply the Oracle patch for CVE-2021-2414 to the affected versions (8.4 and 9.0). Since this requires high privileges, ensure strict least-privilege access controls and monitor for any anomalous routing configuration changes.

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
Communications Session Border ControllerApplication
Affected:= 8.4= 9.0

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
Changed
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/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. Confirm Oracle Communications Session Border Controller is installed
    Identify the installed product by checking system inventory, running processes, or product-specific commands that list the installed Oracle Communications Session Border Controller components
    Affected if The product is present on the system
  2. Determine the installed version of the Session Border Controller
    Use the product's version reporting mechanism, command-line interface, or administrative interface to retrieve the exact version number
    Affected if The installed version is 8.4 or 9.0 exactly
  3. Check if the HTTP interface is network-accessible
    Verify whether the routing component's HTTP interface is exposed to the network, either through port scanning, reviewing network configuration, or checking firewall/access control rules
    Affected if HTTP interface is reachable from network locations beyond the trusted administrative segment
  4. Review high-privilege user access to the Routing component
    Audit accounts or roles with high privileges that have access to the Routing configuration, including checking administrative user lists and their assigned permissions within the Session Border Controller
    Affected if Multiple high-privilege accounts or unexpected accounts exist with routing configuration access
  5. Examine routing configuration for unauthorized changes
    Review routing configuration logs, configuration change history, or audit trails for modifications to routing rules that were not initiated by known administrators
    Affected if Routing configurations show changes from unrecognized sources or outside expected maintenance windows

You are affected if Oracle Communications Session Border Controller version 8.4 or 9.0 is installed and its HTTP routing interface is network-accessible with high-privileged accounts present.

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
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply the Oracle patch for CVE-2021-2414 to the affected versions (8.4 and 9.0). Since this requires high privileges, ensure strict least-privilege access controls and monitor for any anomalous routing configuration changes.

Fix this in Communications Session Border Controller Scoped from the published advisory
  • Consultation4.0 h
  • Implementation6.0 h
  • Testing8.0 h
  • Review / QA3.0 h
21.0 hours of engineering $3,620
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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-2021-2414 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
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