CVE-2018-3938
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 · uneditedAn exploitable stack-based buffer overflow vulnerability exists in the 802dot1xclientcert.cgi functionality of Sony IPELA E Series Camera G5 firmware 1.87.00. A specially crafted POST can cause a stack-based buffer overflow, resulting in remote code execution. An attacker can send a malicious POST request to trigger this vulnerability.
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 confidenceStack-based buffer overflow vulnerability in the 802dot1xclientcert.cgi component of Sony IPELA E Series Camera G5 firmware version 1.87.00. The vulnerability is triggered by sending a specially crafted malicious POST request to the affected CGI endpoint, which can overwrite stack memory and lead to arbitrary code execution with elevated privileges.
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= 1.87.00= 1.87.00= 1.87.00= 1.87.00= 1.87.00= 1.87.00= 1.87.00= 1.87.00CVSS 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
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
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 camera modelAccess the camera web interface or check the device label to confirm the exact model number (Snc Eb600, Snc Eb630, Snc Eb600b, Snc Eb630b, Snc Eb602r, Snc Eb632r, Snc Em600, or Snc Em601)Affected if The camera model matches one of the listed affected models
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Check firmware versionLog into the camera administration panel and navigate to System > Product Information or Settings > Version to confirm the installed firmware versionAffected if Firmware version is exactly 1.87.00
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Locate the 802dot1xclientcert.cgi endpointAccess the camera web interface and attempt to navigate to or check the CGI bin directory for the presence of 802dot1xclientcert.cgiAffected if The 802dot1xclientcert.cgi endpoint exists and is accessible on the device
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Verify 802.1x client certificate feature statusIn the camera web interface, navigate to Network > 802.1x or Security > Certificate settings to determine if the 802.1x certificate client functionality is enabledAffected if The 802.1x certificate client feature is enabled on the camera
The device is affected if it is one of the specific Sony camera models (Snc Eb600, Eb630, Eb600b, Eb630b, Eb602r, Eb632r, Em600, Em601) running firmware version 1.87.00 with the 802dot1xclientcert.cgi endpoint present and the 802.1x certificate client feature enabled.
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 dataApply vendor-supplied firmware patch when available; if no patch exists, disable the 802.1x certificate client functionality, implement network segmentation to limit camera exposure, and deploy a WAF to filter malicious requests as a temporary compensating control.
- Consultation4.0 h
- Implementation2.0 h
- Testing8.0 h
- Review / QA4.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2018-3938 — 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-2018-3938 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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