CVE intelligence and bounded remediation

CVE-2020-2517 — Vulnerability in the Database Gateway for ODBC component of Oracle Database Server

Medium CVSS 4.9

Vulnerability in the Database Gateway for ODBC component of Oracle Database Server. Supported versions that are affected are 11.2.0.4, 12.1.0.2, 12.2.0.1, 18c, and 19c. Difficult to exploit vulnerability allows high privileged attacker having Create Procedure, Create Database Link privilege with network access via OracleNet to compromise Database Gateway for ODBC. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Database Gateway for ODBC accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Database Gateway for ODBC. CVSS 3.0 Base Score 3.3 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:L).

Severity
Medium
CVSS
4.9 (2.0)
Published
2020-01-15
CISA KEV
Not currently listed
Ecosystem
software/application

Affected products

  • oracle / database_server / 11.2.0.4
  • oracle / database_server / 12.1.0.2
  • oracle / database_server / 12.2.0.1
  • oracle / database_server / 18c
  • oracle / database_server / 19c

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.