CVE-2008-2172
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 · uneditedUnspecified vulnerability in Hitachi GR routers allows remote attackers to cause a denial of service (dropped session) via crafted BGP UPDATE messages, leading to route flapping, possibly a related issue to CVE-2007-6372.
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 confidenceHitachi GR routers contain an unspecified vulnerability in BGP (Border Gateway Protocol) processing. Remote attackers can send crafted BGP UPDATE messages to cause denial of service through dropped sessions and route flapping, potentially destabilizing the affected network's routing tables.
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 versions= 1b= 2b= 2b\+= bhall versionsall 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
- M
- Authentication
- None
- Confidentiality
- None
- Integrity
- None
- Availability
- Complete
AV:N/AC:M/Au:N/C:N/I:N/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 modelCheck the device model number via console, CLI (show system info or show version), or web management interface. Look for GR2000, GR3000, or GR4000 designations.Affected if The device is a Hitachi GR2000, GR3000, or GR4000 router (all versions are affected)
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Verify BGP is enabledExecute 'show bgp summary' or 'show ip bgp' in the router CLI. Check for BGP process status and configured neighbors.Affected if BGP is actively running and the router has BGP neighbors configured
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Review BGP peer trust boundariesExecute 'show bgp neighbors' or inspect BGP configuration (show run | include bgp) to list all configured BGP peers and their IP addresses.Affected if The router accepts BGP connections from untrusted or external networks (internet-facing BGP peers without strict route filtering)
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Check for recent BGP session instabilityReview BGP logs or execute 'show bgp neighbors' to check for session state transitions, and 'show ip bgp' to look for frequent route changes. Look for 'BGP Notification' or 'Session down' events.Affected if BGP sessions are frequently dropping or routes are flapping without recent legitimate network changes
You are affected if you are running any version of Hitachi GR2000, GR3000, or GR4000 with BGP enabled and exposed to untrusted networks that could send crafted BGP UPDATE messages.
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 dataUpdate Hitachi GR router firmware to the latest patched version. Alternatively, implement BGP route filtering or traffic scrubbing at network boundaries to reject malformed BGP UPDATE messages.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,600.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2008-2172 — 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-2008-2172 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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