CVE intelligence and bounded remediation

CVE-2018-3658 — Siemens Simatic Field Pg M5 Firmware security vulnerability

Medium CVSS 5.3

Multiple memory leaks in Intel AMT in Intel CSME firmware versions before 12.0.5 may allow an unauthenticated user with Intel AMT provisioned to potentially cause a partial denial of service via network access.

Severity
Medium
CVSS
5.3 (3.1)
Published
2018-09-12
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-772

Affected products

  • siemens / simatic_field_pg_m5_firmware
  • siemens / simatic_ipc427e_firmware
  • siemens / simatic_ipc477e_firmware
  • siemens / simatic_ipc547e_firmware
  • siemens / simatic_pc547g_firmware
  • siemens / simatic_ipc627d_firmware

Showing 6 representative product identities from 14 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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