dbcve.org
S5700 FirmwareOperating system · Huawei

CVE-2017-15324

HIGH · 7.5 CVSS v3.0 Published 2017-12-22
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges Zero-click

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 · unedited
Huawei S5700 and S6700 with software of V200R005C00 have a DoS vulnerability due to insufficient validation of the Network Quality Analysis (NQA) packets. A remote attacker could exploit this vulnerability by sending malformed NQA packets to the target device. Successful exploitation could make the device restart.

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 confidence

The Huawei S5700 and S6700 switches running V200R005C00 software contain a denial-of-service vulnerability in the Network Quality Analysis (NQA) feature. The vulnerability stems from insufficient validation of incoming NQA packets, allowing a remote attacker to send malformed packets that cause the device to restart.

MitigationRestrict NQA packet traffic at network borders using ACLs or firewall rules to block untrusted NQA sources. Apply the Huawei V200R005C00SPH or later patch to remediate the vulnerability.

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
S5700 FirmwareOperating system
Affected:= v200r005c00
S6700 FirmwareOperating system
Affected:= v200r005c00

CVSS 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
None
Integrity
None
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify the switch model
    Run 'display device' or 'display version' command to confirm the device is a Huawei S5700 or S6700 series switch
    Affected if The device model is S5700 or S6700
  2. Check the firmware version
    Run 'display version' command and locate the software version field. Confirm the version is exactly V200R005C00
    Affected if The firmware version equals V200R005C00 exactly
  3. Verify if NQA feature is configured
    Run 'display nqa' or 'display nqa statistics' command to check if Network Quality Analysis is enabled or has existing configurations
    Affected if NQA feature is enabled or has active configurations on the device

The device is affected if it is a Huawei S5700 or S6700 running firmware version V200R005C00 with the NQA feature enabled or configured.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Restrict NQA packet traffic at network borders using ACLs or firewall rules to block untrusted NQA sources. Apply the Huawei V200R005C00SPH or later patch to remediate the vulnerability.

Fix this in S5700 Firmware Scoped from the published advisory
  • Consultation3.0 h
  • Implementation6.0 h
  • Testing3.0 h
  • Review / QA2.0 h
14.0 hours of engineering $2,490
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2017-15324 in production — separate from our analysis above.

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What this is

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What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
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