CVE intelligence and bounded remediation

CVE-2016-1466 — Cisco Unified Communications Manager Im And Presence Service security vulnerability

High CVSS 7.8

Cisco Unified Communications Manager IM and Presence Service 9.1(1) SU6, 9.1(1) SU6a, 9.1(1) SU7, 10.5(2) SU2, 10.5(2) SU2a, 11.0(1) SU1, and 11.5(1) allows remote attackers to cause a denial of service (sipd process restart) via crafted headers in a SIP packet, aka Bug ID CSCva39072.

Severity
High
CVSS
7.8 (2.0)
Published
2016-08-08
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-399

Affected products

  • cisco / unified_communications_manager_im_and_presence_service / 9.1(1)
  • cisco / unified_communications_manager_im_and_presence_service / 10.5(2)
  • cisco / unified_communications_manager_im_and_presence_service / 11.0(1)
  • cisco / unified_communications_manager_im_and_presence_service / 11.5(1)

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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