CVE-2008-1242
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 control panel on the Belkin F5D7230-4 router with firmware 9.01.10 maintains authentication state by IP address, which allows remote attackers to bypass authentication by establishing a session from a source IP address of a previously authenticated user, a different vulnerability than CVE-2005-3802.
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 confidenceThe Belkin F5D7230-4 router firmware 9.01.10 maintains authentication state by tying sessions to the source IP address rather than using proper session tokens or cookies. An attacker who can spoof or inherit the IP address of a previously authenticated user can bypass authentication entirely and gain access to the router's control panel.
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 dataall versionsCVSS 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
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 the router modelInspect the physical router label or access the admin interface to confirm the exact model numberAffected if Model is Belkin F5D7230-4 (or variant F5d7230)
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Check the installed firmware versionLog into the router admin panel, navigate to System Status or Utilities section, and record the firmware version numberAffected if Any firmware version is installed (all versions are affected per the CVE)
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Verify the web admin interface is accessibleAttempt to reach the router web interface by entering its LAN IP address in a browser (commonly 192.168.2.1)Affected if The login page loads and accepts credentials
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Determine if remote management is enabledIn the router admin panel, check the Security or Access Control settings for 'Remote Management', 'WAN Access', or 'External Access' optionsAffected if Remote management is enabled, allowing attackers on the internet to attempt exploitation
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Assess network exposure to IP spoofingReview network configuration to determine if ingress filtering is implemented and whether untrusted devices can send traffic with spoofed source IP addressesAffected if Network lacks IP spoofing protections and the router admin interface is accessible to untrusted network segments
The environment is affected if a Belkin F5D7230-4 router is deployed with its web admin interface accessible, regardless of firmware version.
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 router firmware if a patched version is available; if not, implement network-level IP spoofing protections such as ingress filtering and VLAN segmentation to prevent attackers from spoofing authenticated IP addresses.
- 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-2008-1242 — 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-2008-1242 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
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