CVE-2004-2182
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 · uneditedSession fixation vulnerability in Macromedia JRun 4.0 allows remote attackers to hijack user sessions by pre-setting the user session ID information used by the session server.
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 confidenceSession fixation vulnerability in Macromedia JRun 4.0 allows remote attackers to hijack user sessions by pre-setting the user session ID before authentication, then using that same ID to assume the user's session after login.
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= 4.0= 4.0_build_61650CVSS 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
- Partial
- Integrity
- Partial
- Availability
- Partial
AV:N/AC:L/Au:N/C:P/I:P/A:P
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 JRun installation and versionLocate the JRun installation directory and check the version file or product manifest. Look for version 4.0 or build 61650 specifically.Affected if JRun version 4.0 or build 61650 is installed and running.
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Determine if session regeneration is implementedReview the application authentication code to verify that HttpSession.invalidate() is called on the pre-login session and a new session is created after successful login.Affected if The application does not regenerate session IDs after authentication, allowing session fixation.
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Check session configuration in JRunExamine the JRun server configuration files (jrun.xml or server.xml) for session manager settings and verify whether the application enforces session ID regeneration.Affected if Session configuration allows persistent session IDs across authentication without regeneration.
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Test session behaviorSet a known session cookie value before authentication, complete login, then verify whether the session ID changes after successful authentication.Affected if The session ID remains unchanged after login, indicating the session fixation vulnerability is present.
The environment is affected if JRun 4.0 is running and the web application does not regenerate session IDs upon successful authentication, allowing an attacker to fixate a session ID before login.
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 dataRegenerate session IDs upon successful authentication and invalidate the pre-login session identifier to prevent attackers from predetermining session values.
- 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-2004-2182 — 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-2004-2182 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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