CVE intelligence and bounded remediation

CVE-2020-1847 — There is a denial of service vulnerability in some Huawei products

High CVSS 7.5

There is a denial of service vulnerability in some Huawei products. There is no protection against the attack scenario of specific protocol. A remote, unauthorized attackers can construct attack scenarios, which leads to denial of service.Affected product versions include:NIP6300 versions V500R001C30,V500R001C60;NIP6600 versions V500R001C30,V500R001C60;Secospace USG6300 versions V500R001C30,V500R001C60;Secospace USG6500 versions V500R001C30,V500R001C60;Secospace USG6600 versions V500R001C30,V500R001C60;USG9500 versions V500R001C30,V500R001C60.

Severity
High
CVSS
7.5 (3.1)
Published
2020-11-13
CISA KEV
Not currently listed
Ecosystem
operating-system

Affected products

  • huawei / nip6300_firmware / v500r001c30
  • huawei / nip6300_firmware / v500r001c60
  • huawei / nip6600_firmware / v500r001c30
  • huawei / nip6600_firmware / v500r001c60
  • huawei / secospace_usg6300_firmware / v500r001c30
  • huawei / secospace_usg6300_firmware / v500r001c60

Showing 6 representative product identities from 12 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Resource exhaustion and denial of service

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Identify attacker-influenced work factors including input size, nesting, compression, fan-out, regex cost, allocation, recursion, retries, and connection lifetime.
  • Map per-request and shared CPU, memory, disk, descriptor, thread, queue, and downstream-service limits.
  • Determine whether authentication, tenancy, quotas, and rate controls apply before expensive processing begins.

Remediate safely

  • Bound input size, nesting, expansion, work, concurrency, queue depth, retries, and execution time before resource-intensive processing.
  • Release resources on every success, error, cancellation, and timeout path and use backpressure instead of unbounded buffering.
  • Update affected components and add small deterministic tests that assert resource ceilings rather than exhausting a host.

Authoritative sources

Complete CVE record and remediation plan

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