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Optical Networking Systems SoftwareApplication · Cisco

CVE-2004-0308

HIGH · 10.0 CVSS v2.0 Published 2004-11-24
Patch available
A vendor patch is available. No clean upgrade release — apply the published patch.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click Patch available

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
Unknown vulnerability in Cisco ONS 15327 before 4.1(3), ONS 15454 before 4.6(1), ONS 15454 SD before 4.1(3), and Cisco ONS15600 before 1.3(0) allows a superuser whose account is locked out, disabled, or suspended to gain unauthorized access via a Telnet connection to the VxWorks shell.

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

A detailed technical summary for this CVE is being prepared.

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
Optical Networking Systems SoftwareApplication
Affected:= 1.0= 4.0\(1\)= 4.0\(2\)= 4.0.0= 4.1\(0\)= 4.1\(1\)= 4.1\(2\)= 4.1\(3\)= 4.1.0= 4.5

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
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:N/AC:L/Au:N/C:C/I:C/A:C

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
Patch available Apply the vendor patch
Vendor patch www.cisco.com →
Recommended fix High confidence

ONS 15327 to 4.1(3)+; ONS 15454 to 4.6(1)+; ONS 15454 SD to 4.1(3)+; ONS 15600 to 1.3(0)+

  1. Identify the specific Cisco ONS platform (ONS 15327, ONS 15454, ONS 15454 SD, or ONS 15600) in use
  2. Determine the current software version via the CLI or Cisco TransportPlanner
  3. For ONS 15327: Upgrade to version 4.1(3) or later
  4. For ONS 15454: Upgrade to version 4.6(1) or later
  5. For ONS 15454 SD: Upgrade to version 4.1(3) or later
  6. For ONS 15600: Upgrade to version 1.3(0) or later
  7. Follow Cisco upgrade procedures including backup of configuration and database
  8. Verify the upgrade was successful and the vulnerability is addressed
Caveat Review release notes for any configuration changes or deprecated features between current and target versions; backup all configurations before upgrading

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

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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-2004-0308 in production — separate from our analysis above.

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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
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