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Ac6005 FirmwareOperating system · Huawei

CVE-2017-8147

HIGH · 7.5 CVSS v3.0 Published 2017-11-22
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
AC6005 V200R006C10SPC200,AC6605 V200R006C10SPC200,AR1200 with software V200R005C10CP0582T, V200R005C10HP0581T, V200R005C20SPC026T,AR200 with software V200R005C20SPC026T,AR3200 V200R005C20SPC026T,CloudEngine 12800 with software V100R003C00, V100R005C00, V100R005C10, V100R006C00, V200R001C00,CloudEngine 5800 with software V100R003C00, V100R005C00, V100R005C10, V100R006C00, V200R001C00,CloudEngine 6800 with software V100R003C00, V100R005C00, V100R005C10, V100R006C00, V200R001C00,CloudEngine 7800 with software V100R003C00, V100R005C00, V100R005C10, V100R006C00, V200R001C00,CloudEngine 8800 with software V100R006C00, V200R001C00,E600 V200R008C00,S12700 with software V200R005C00, V200R006C00, V200R007C00, V200R008C00,S1700 with software V100R006C00, V100R007C00, V200R006C00,S2300 with software V100R005C00, V100R006C00, V100R006C03, V100R006C05, V200R003C00, V200R003C02, V200R003C10, V200R005C00, V200R005C01, V200R005C02, V200R005C03, V200R006C00, V200R007C00, V200R008C00,S2700 with software V100R005C00, V100R006C00, V100R006C03, V100R006C05, V200R003C00, V200R003C02, V200R003C10, V200R005C00, V200R005C01, V200R005C02, V200R005C03, V200R006C00, V200R007C00, V200R008C00,S5300 with software V100R005C00, V100R006C00, V100R006C01, V200R001C00, V200R001C01, V200R002C00, V200R003C00, V200R003C02, V200R003C10, V200R005C00, V200R006C00, V200R007C00, V200R008C00,S5700 with software V100R005C00, V100R006C00, V100R006C01, V200R001C00, V200R001C01, V200R002C00, V200R003C00, V200R003C02, V200R003C10, V200R005C00, V200R006C00, V200R007C00, V200R008C00,S6300 with software V100R006C00, V200R001C00, V200R001C01, V200R002C00, V200R003C00, V200R003C02, V200R003C10, V200R005C00, V200R008C00,S6700 with software V100R006C00, V200R001C00, V200R001C01, V200R002C00, V200R003C00, V200R003C02, V200R003C10, V200R005C00, V200R006C00, V200R007C00, V200R008C00,S7700 with software V100R003C00, V100R006C00, V200R001C00, V200R001C01, V200R002C00, V200R003C00, V200R005C00, V200R006C00, V200R007C00, V200R008C00,S9300 with software V100R001C00, V100R002C00, V100R003C00, V100R006C00, V200R001C00, V200R002C00, V200R003C00, V200R005C00, V200R006C00, V200R007C00, V200R008C00, V200R008C10,S9700 with software V200R001C00, V200R002C00, V200R003C00, V200R005C00, V200R006C00, V200R007C00, V200R008C00,Secospace USG6600 V500R001C00SPC050 have a MaxAge LSA vulnerability due to improper OSPF implementation. When the device receives special LSA packets, the LS (Link Status) age would be set to MaxAge, 3600 seconds. An attacker can exploit this vulnerability to poison the route table and launch a DoS attack.

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

OSPF MaxAge LSA vulnerability in Huawei devices where specially crafted Link State Advertisement packets cause the LS age to be set to MaxAge (3600 seconds). This poisons the OSPF routing table and can trigger denial of service by disrupting routing. Exploitable remotely over the network without authentication.

MitigationApply vendor-supplied firmware patches for affected versions; alternatively, enable OSPF MD5 or HMAC authentication on OSPF interfaces to prevent injection of malicious LSAs.

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
Ac6005 FirmwareOperating system
Affected:= v200r006c10spc200
Ac6605 FirmwareOperating system
Affected:= v200r006c10spc200
Ar1200 FirmwareOperating system
Affected:= v200r005c10cp0582t= v200r005c10hp0581t= v200r005c20spc026t
Ar200 FirmwareOperating system
Affected:= v200r005c20spc026t
Ar3200 FirmwareOperating system
Affected:= v200r005c20spc026t
Cloudengine 12800 FirmwareOperating system
Affected:= v100r003c00= v100r005c00= v100r005c10= v100r006c00= v200r001c00
Cloudengine 5800 FirmwareOperating system
Affected:= v100r003c00= v100r005c00= v100r005c10= v100r006c00= v200r001c00
Cloudengine 6800 FirmwareOperating system
Affected:= v100r003c00= v100r005c00= v100r005c10= v100r006c00= v200r001c00

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 device model and firmware version
    Run 'display version' or 'display device' on the Huawei device to get the hardware model and firmware version
    Affected if The device model matches one of: Ac6005, Ac6605, Ar1200, Ar200, Ar3200, Cloudengine 12800/5800/6800 AND the firmware version exactly matches any of the listed affected versions (v200r006c10spc200, v200r005c10cp0582t, v200r005c10hp0581t, v200r005c20spc026t, v100r003c00, v100r005c00, v100r005c10, v100
  2. Verify OSPF is enabled
    Run 'display ospf interface' or 'display ospf brief' to check if OSPF process is active on any interface
    Affected if OSPF is running and the device is in an OSPF area
  3. Check OSPF authentication configuration
    Run 'display ospf interface [interface-name]' and examine the authentication mode field for each OSPF-enabled interface
    Affected if OSPF interfaces show 'None' or 'Simple' authentication (or no authentication configured), meaning the device accepts OSPF packets without MD5 or HMAC verification
  4. Monitor for MaxAge LSA entries
    Run 'display ospf lsdb' and check the Age column in the LSA output; look for LSAs with Age equal to 3600 (MaxAge) that are unexpectedly appearing or flooding
    Affected if LSAs with Age=3600 are appearing frequently or from unexpected sources, indicating potential LSA poisoning

A user is affected if they run one of the listed Huawei device models at exactly the specified firmware versions, have OSPF enabled, and have OSPF configured without MD5 or HMAC authentication (or with only simple password authentication).

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 vendor-supplied firmware patches for affected versions; alternatively, enable OSPF MD5 or HMAC authentication on OSPF interfaces to prevent injection of malicious LSAs.

Fix this in Ac6005 Firmware Scoped from the published advisory
  • Consultation6.0 h
  • Implementation12.0 h
  • Testing6.0 h
  • Review / QA3.0 h
27.0 hours of engineering $4,800
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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-2017-8147 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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