Broadworks Application Delivery PlatformApplication · Cisco

CVE-2023-20238

CRITICAL · 9.8 CVSS v3.1 Published 2023-09-06
Fix available
A fix is available. Upgrade to 23.0.1075.ap384245 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges 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
A vulnerability in the single sign-on (SSO) implementation of Cisco BroadWorks Application Delivery Platform and Cisco BroadWorks Xtended Services Platform could allow an unauthenticated, remote attacker to forge the credentials required to access an affected system. This vulnerability is due to the method used to validate SSO tokens. An attacker could exploit this vulnerability by authenticating to the application with forged credentials. A successful exploit could allow the attacker to commit toll fraud or to execute commands at the privilege level of the forged account. If that account is an Administrator account, the attacker would have the ability to view confidential information, modify customer settings, or modify settings for other users. To exploit this vulnerability, the attacker would need a valid user ID that is associated with an affected Cisco BroadWorks system.

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 critical vulnerability in the SSO implementation of Cisco BroadWorks platforms allows attackers to forge authentication credentials due to improper validation of SSO tokens. An attacker with a valid user ID can bypass authentication and gain access at the privilege level of the forged account, enabling toll fraud or command execution, with administrative accounts providing full access to modify settings and view confidential data.

MitigationApply Cisco patches for CVE-2023-20238 immediately. Until patched, restrict network access to affected systems and monitor for unauthorized access using valid user accounts.

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
Broadworks Application Delivery PlatformApplication
Affected:= ri.2023.06= ri.2023.07
Broadworks Xtended Services PlatformApplication
Affected:< 23.0.1075.ap384245= 2023.06= 2023.07

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
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/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 the Cisco BroadWorks product
    Determine if the system is running either Cisco Broadworks Application Delivery Platform or Cisco Broadworks Xtended Services Platform by checking the installed software inventory or system documentation
    Affected if The system runs either product family
  2. Check Application Delivery Platform version
    Locate the version information for Cisco Broadworks Application Delivery Platform and compare it against the affected versions: ri.2023.06 or ri.2023.07
    Affected if The version equals ri.2023.06 or ri.2023.07
  3. Check Xtended Services Platform version
    Locate the version information for Cisco Broadworks Xtended Services Platform and compare it against the affected versions: 2023.06, 2023.07, or versions earlier than 23.0.1075.ap384245
    Affected if The version is 2023.06, 2023.07, or less than 23.0.1075.ap384245
  4. Confirm SSO is enabled
    Review the system configuration to determine if the Single Sign-On (SSO) feature is actively implemented and in use
    Affected if SSO is enabled and the product version matches the affected ranges
  5. Audit for unauthorized access
    Review authentication and access logs for legitimate user accounts being used from unexpected locations, times, or with unusual activity patterns that may indicate credential forgery
    Affected if Evidence exists of unauthorized access using valid user credentials

A user is affected if their environment runs Cisco BroadWorks Application Delivery Platform (ri.2023.06 or ri.2023.07) or Xtended Services Platform (2023.06, 2023.07, or below 23.0.1075.ap384245) with SSO enabled, or if evidence of credential forgery is found in access logs.

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
Upgrade available Upgrade to 23.0.1075.ap384245 or later
Fixed in 23.0.1075.ap384245
Interim mitigation

Apply Cisco patches for CVE-2023-20238 immediately. Until patched, restrict network access to affected systems and monitor for unauthorized access using valid user accounts.

Fix this in Broadworks Application Delivery Platform Scoped from the published advisory
  • Consultation8.0 h
  • Implementation16.0 h
  • Testing12.0 h
  • Review / QA8.0 h
44.0 hours of engineering $7,720
Get the upgrade done

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Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2023-20238 — 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 sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-20238 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