CVE-2020-2511

HIGH

Oracle Database Server 12.1.0.2, 12.2.0.1, 18c, 19c - Authenticated Denial of Service in Core RDBMS

Title source: llm
STIX 2.1

Description

Vulnerability in the Core RDBMS component of Oracle Database Server. Supported versions that are affected are 12.1.0.2, 12.2.0.1, 18c and 19c. Easily exploitable vulnerability allows low privileged attacker having Create Session privilege with network access via OracleNet to compromise Core RDBMS. While the vulnerability is in Core RDBMS, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Core RDBMS. CVSS 3.0 Base Score 7.7 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H).

References (1)

Core 1
Core References
Patch, Vendor Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpujan2020.html

Scores

CVSS v3 7.7
EPSS 0.0132
EPSS Percentile 67.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

Status published
Products (4)
oracle/database_server 12.1.0.2
oracle/database_server 12.2.0.1
oracle/database_server 18c
oracle/database_server 19c
Published Jan 15, 2020
Tracked Since Feb 18, 2026