CVE intelligence and bounded remediation

CVE-2021-22360 — There is a resource management error vulnerability in the verisions V500R001C60SPC500, V500R005C00SPC100, V500R005C00SPC200 of USG9500

Medium CVSS 4.9

There is a resource management error vulnerability in the verisions V500R001C60SPC500, V500R005C00SPC100, V500R005C00SPC200 of USG9500. An authentication attacker needs to perform specific operations to exploit the vulnerability on the affected device. Due to improper resource management of the function, the vulnerability can be exploited to cause service abnormal on affected devices.

Severity
Medium
CVSS
4.9 (3.1)
Published
2021-05-27
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-770

Affected products

  • huawei / usg9500_firmware / v500r001c60spc500
  • huawei / usg9500_firmware / v500r005c00spc100
  • huawei / usg9500_firmware / v500r005c00spc200

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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