CVE intelligence and bounded remediation

CVE-2019-9678 — Some Dahua products have the problem of denial of service during the login process

High CVSS 7.5

Some Dahua products have the problem of denial of service during the login process. An attacker can cause a device crashed by constructing a malicious packet. Affected products include: IPC-HDW1X2X,IPC-HFW1X2X,IPC-HDW2X2X,IPC-HFW2X2X,IPC-HDW4X2X,IPC-HFW4X2X,IPC-HDBW4X2X,IPC-HDW5X2X,IPC-HFW5X2X for versions which Build time is before August 18, 2019.

Severity
High
CVSS
7.5 (3.1)
Published
2019-09-18
CISA KEV
Not currently listed
Ecosystem
operating-system

Affected products

  • dahuasecurity / ipc-hdw1x2x_firmware
  • dahuasecurity / ipc-hfw1x2x_firmware
  • dahuasecurity / ipc-hdw2x2x_firmware
  • dahuasecurity / ipc-hfw2x2x_firmware
  • dahuasecurity / ipc-hdw4x2x_firmware
  • dahuasecurity / ipc-hfw4x2x_firmware

Showing 6 representative product identities from 9 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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