CVE-2018-1243
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 · uneditedDell EMC iDRAC6, versions prior to 2.91, iDRAC7/iDRAC8, versions prior to 2.60.60.60 and iDRAC9, versions prior to 3.21.21.21, contain a weak CGI session ID vulnerability. The sessions invoked via CGI binaries use 96-bit numeric-only session ID values, which makes it easier for remote attackers to perform bruteforce session guessing attacks.
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 confidenceDell EMC iDRAC web interfaces use weak session IDs generated by CGI binaries. The session IDs are numeric-only and limited to 96-bit entropy, making them vulnerable to brute-force session hijacking attacks where attackers guess valid session identifiers to impersonate authenticated users.
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< 2.91< 2.60.60.60< 2.60.60.60< 3.21.21.21CVSS 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
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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 iDRAC firmware versionAccess the iDRAC web interface and navigate to the About or Maintenance page to view the firmware version. Alternatively, use the racadm command: 'racadm get iDRAC.FirmwareInfo' or via IPMI: 'ipmitool -I lanplus -H <idrac_ip> -U root -P <password> raw command'.Affected if The displayed version is below 2.91 for iDRAC6, below 2.60.60.60 for iDRAC7/iDRAC8, or below 3.21.21.21 for iDRAC9.
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Confirm iDRAC web interface is enabledLog into iDRAC settings and verify that the web server/SSL web server is enabled, or use racadm: 'racadm get iDRAC.WebServer.1' to check the WebServer.1 attribute.Affected if The web interface is enabled and accessible, as this is the attack vector for exploiting weak session IDs.
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Check iDRAC network accessibilityDetermine if the iDRAC management interface is exposed to untrusted networks by reviewing firewall rules, switch ACLs, or by attempting to access https://<idrac_ip> from an external system.Affected if The iDRAC web interface is reachable from networks that are not explicitly trusted, increasing exposure to brute-force attacks.
Your environment is affected if your iDRAC firmware version falls below the fixed releases (2.91, 2.60.60.60, or 3.21.21.21 depending on model) AND the iDRAC web interface is enabled and accessible.
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 data2.60.60.602.913.21.21.21
Upgrade iDRAC firmware to patched versions: iDRAC6 to 2.91+, iDRAC7/iDRAC8 to 2.60.60.60+, and iDRAC9 to 3.21.21.21+. If immediate patching is not possible, restrict network access to iDRAC management interfaces using firewalls or ACLs.
- Consultation1.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-1243 — 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-2018-1243 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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- Version or environment caveats, and links to real fixes
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