CVE intelligence and bounded remediation

CVE-2021-22328 — 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. In specific scenarios, due to the improper handling of the packets, an attacker may craft the specific packet. Successful exploit may cause some services abnormal. Affected product versions include:CloudEngine 12800 V200R005C00SPC800, CloudEngine 5800 V200R005C00SPC800, CloudEngine 6800 V200R005C00SPC800, CloudEngine 7800 V200R005C00SPC800.

Severity
High
CVSS
7.5 (3.1)
Published
2021-08-23
CISA KEV
Not currently listed
Ecosystem
operating-system

Affected products

  • huawei / cloudengine_12800_firmware / v200r005c00spc800
  • huawei / cloudengine_5800_firmware / v200r005c00spc800
  • huawei / cloudengine_6800_firmware / v200r005c00spc800
  • huawei / cloudengine_7800_firmware / v200r005c00spc800

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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