dbcve.org
Cloudengine 12800 FirmwareOperating system · Huawei

CVE-2016-8782

MEDIUM · 5.3 CVSS v3.0 Published 2018-03-09
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
62/100
Remediation priority · Elevated
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 CloudEngine 12800 V100R003C00, V100R003C10, V100R005C00, V100R005C10, V100R006C00 have a memory leak vulnerability. An unauthenticated attacker may send specific Label Distribution Protocol (LDP) packets to the devices repeatedly. Due to improper validation of some specific fields of the packet, the LDP processing module does not release the memory, resulting in memory leak.

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

Memory leak vulnerability in Huawei CloudEngine 12800 switches running V100R003C00 through V100R006C00. Unauthenticated attackers can send specially crafted LDP (Label Distribution Protocol) packets with malformed fields that bypass validation, causing the LDP processing module to fail to release allocated memory on each packet. Repeated exploitation leads to memory exhaustion.

MitigationApply Huawei-supplied patches for the affected firmware versions. If patches are unavailable, consider disabling LDP protocol if not required in the network environment, or implement network access controls to restrict LDP traffic to trusted peers only.

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
Cloudengine 12800 FirmwareOperating system
Affected:= v100r003c00= v100r003c10= v100r005c00= v100r005c10= v100r006c00

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
Low

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

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 device model
    Check if the device is a Huawei CloudEngine 12800 switch by running 'display device' or checking the physical device labeling
    Affected if Device is not a CloudEngine 12800 model, then it is not affected by this specific CVE
  2. Check the firmware version
    Run 'display version' on the device CLI to obtain the installed firmware version
    Affected if The displayed version matches any of the following: V100R003C00, V100R003C10, V100R005C00, V100R005C10, or V100R006C00; if the version is outside this list or later than V100R006C00, the device is not affected by this specific vulnerability
  3. Verify LDP protocol is enabled
    Run 'display ldp status' or 'display mpls ldp' to check if LDP is configured and active on any interfaces
    Affected if LDP is enabled and running on the device; if LDP is disabled or not configured, the attack surface for this vulnerability does not exist
  4. Monitor memory utilization
    Run 'display memory-usage' or 'display diagnostic-information' to check for abnormally high memory consumption over time
    Affected if Memory usage shows continuous growth or unusually high values, especially if correlated with LDP traffic processing
  5. Inspect LDP packet processing logs
    Run 'display logbuffer' or check LDP-specific logs for error messages related to malformed LDP packets or memory allocation failures
    Affected if Logs show repeated LDP processing errors or memory allocation failures associated with incoming LDP packets

The device is affected if it is a CloudEngine 12800 running one of the listed firmware versions (V100R003C00 through V100R006C00) with LDP protocol enabled, and memory exhaustion or LDP-related error logs are observed.

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

Apply Huawei-supplied patches for the affected firmware versions. If patches are unavailable, consider disabling LDP protocol if not required in the network environment, or implement network access controls to restrict LDP traffic to trusted peers only.

Fix this in Cloudengine 12800 Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,860
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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-2016-8782 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
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  • Version or environment caveats, and links to real fixes
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