CVE-2023-35967
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 · uneditedTwo heap-based buffer overflow vulnerabilities exist in the gwcfg_cgi_set_manage_post_data functionality of Yifan YF325 v1.0_20221108. A specially crafted network request can lead to a heap buffer overflow. An attacker can send a network request to trigger these vulnerabilities.This integer overflow result is used as argument for the malloc function.
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 confidenceTwo heap-based buffer overflow vulnerabilities exist in the gwcfg_cgi_set_manage_post_data function of Yifan YF325 v1.0_20221108 firmware. An integer overflow in the size calculation used for malloc() results in undersized heap allocation, allowing a specially crafted network request to overflow the allocated buffer.
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= 1.0_20221108CVSS 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
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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 device modelAccess the device's web management interface or check device labeling to confirm the model is Yifan YF325Affected if Device is not a Yifan YF325 model
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Check firmware versionLog into the web management interface and navigate to the firmware/version information page, or check the firmware file name if firmware can be extracted from the deviceAffected if Firmware version is 1.0_20221108 exactly
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Confirm management interface is network accessibleAttempt to access the device's web interface (typically HTTP port 80 or HTTPS port 443) from a remote system on the networkAffected if The web management interface responds to network requests
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Verify CGI endpoint exposureCheck if the /cgi/gwcfg_cgi endpoint is accessible by sending a request to http://[device-ip]/cgi/gwcfg_cgiAffected if The CGI endpoint responds and accepts POST requests containing manage_post_data parameters
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Assess network exposure of management interfaceDetermine if the device management interface is reachable from untrusted networks or directly from the internet, rather than only from a trusted management VLANAffected if Management interface is accessible from untrusted networks or the internet
Device is affected if it is a Yifan YF325 running firmware version 1.0_20221108 with its web management interface and /cgi/gwcfg_cgi endpoint network-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 dataApply vendor firmware update when available; until then, restrict network access to the device's management interface and place the device in a separate network segment to reduce attack surface.
- Consultation6.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,448.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-35967 — 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-2023-35967 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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