PT-2021-1798 · Oracle · Oracle Database Server+1

Eddie Zhu · Published 2021-01-19 · Updated 2021-01-25 · CVE-2021-2035

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions: Oracle Database Server versions 12.1.0.2, 12.2.0.1, 18c, and 19c

Description: The issue exists due to insufficient input validation in the RDBMS Scheduler component of Oracle Database Server, allowing a remote attacker to execute arbitrary code by sending specially crafted network packets. This can result in the takeover of the RDBMS Scheduler. A low-privileged attacker with Export Full Database privilege and network access via Oracle Net can exploit this issue.

Recommendations: For versions 12.1.0.2, 12.2.0.1, 18c, and 19c, update to a version that includes the fix for this issue to prevent exploitation. As a temporary workaround, consider restricting network access via Oracle Net to minimize the risk of exploitation. Restrict the Export Full Database privilege to prevent low-privileged attackers from exploiting the vulnerability.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2021-00546

CVE-2021-2035

Affected Products

Oracle Database

Oracle Database Server

References · 8

• https://oracle.com/security-alerts/cpujan2021.html · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-00546 · Security Note
• https://osv.dev/vulnerability/CVE-2021-2035 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-2035 · Security Note
• https://safe-surf.ru/specialists/bulletins-nkcki/660659 · Security Note
• https://support.oracle.com/rs?type=doc&id=2725756.1 · Note
• https://cybersecurity-help.cz/vdb/SB2021011912 · Note
• https://t.me/cibsecurity/22410 · Telegram Post