CVE intelligence and bounded remediation

CVE-2017-2670 — Redhat Undertow security vulnerability

High CVSS 7.5

It was found in Undertow before 1.3.28 that with non-clean TCP close, the Websocket server gets into infinite loop on every IO thread, effectively causing DoS.

Severity
High
CVSS
7.5 (3.0)
Published
2018-07-27
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-835

Affected products

  • redhat / undertow
  • debian / debian_linux / 9.0
  • redhat / jboss_enterprise_application_platform / 6.0.0
  • redhat / jboss_enterprise_application_platform / 7.0.0
  • redhat / jboss_enterprise_application_platform / 7.1.0

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

The detailed catalog view below loads this exact record, its source evidence, and the full seven-phase agentic change plan.