CVE-2012-4688
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 · uneditedThe Central application in i-GEN opLYNX before 2.01.9 allows remote attackers to bypass authentication via vectors involving the disabling of browser JavaScript support.
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 confidenceThe Central application in i-GEN opLYNX before version 2.01.9 has an authentication bypass vulnerability. The application relies on client-side JavaScript for security checks rather than server-side validation, allowing attackers to bypass authentication by simply disabling JavaScript in their browser.
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<= 2.01.8CVSS 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 i-GEN opLYNX installation and versionCheck the application installation directory, About screen, or registry entries for the installed version number of i-GEN opLYNX. Look for version files, installer logs, or the application banner.Affected if The installed version is 2.01.8 or lower (any version up to and including 2.01.8).
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Locate the Central application componentNavigate to the Central application within the i-GEN opLYNX installation, typically found in the web application's directory structure or program files.Affected if The Central application component exists in the installation.
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Verify client-side authentication mechanismAccess the Central login page and attempt to disable JavaScript in the browser, then submit login credentials. Observe whether authentication succeeds without JavaScript enabled.Affected if Authentication succeeds when JavaScript is disabled, indicating client-side-only validation is in use.
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Inspect authentication-related JavaScript filesExamine the web application's JavaScript files (typically .js files in the web root or scripts directory) for authentication logic that runs in the browser rather than on the server.Affected if The JavaScript files contain authentication checks (such as password validation or role verification) that are performed client-side instead of server-side.
A user is affected if i-GEN opLYNX version 2.01.8 or lower is installed and the Central application relies on JavaScript-based authentication that can be bypassed by disabling browser JavaScript.
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 dataUpgrade i-GEN opLYNX to version 2.01.9 or later, which should implement proper server-side authentication that cannot be bypassed by disabling JavaScript.
- Consultation6.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2012-4688 — 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-2012-4688 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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