CVE intelligence and bounded remediation

CVE-2020-3195 — Cisco Firepower Threat Defense security vulnerability

High CVSS 8.6

A vulnerability in the Open Shortest Path First (OSPF) implementation in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a memory leak on an affected device. The vulnerability is due to incorrect processing of certain OSPF packets. An attacker could exploit this vulnerability by sending a series of crafted OSPF packets to be processed by an affected device. A successful exploit could allow the attacker to continuously consume memory on an affected device and eventually cause it to reload, resulting in a denial of service (DoS) condition.

Severity
High
CVSS
8.6 (3.0)
Published
2020-05-06
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-400, CWE-401

Affected products

  • cisco / firepower_threat_defense
  • cisco / asa_5505_firmware / 9.12(2)
  • cisco / asa_5510_firmware / 9.12(2)
  • cisco / asa_5512-x_firmware / 9.12(2)
  • cisco / asa_5515-x_firmware / 9.12(2)
  • cisco / asa_5520_firmware / 9.12(2)

Showing 6 representative product identities from 16 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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