Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2021-2351

8.3 · HIGH

Vulnerability in the Advanced Networking Option component of Oracle Database Server.

Published Jul 21, 2021CWE-327EPSS 2.43%

Overview

CVE-2021-2351 is a high-severity vulnerability. It was published on July 21, 2021 and has a CVSS 3.1 base score of 8.3 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Vulnerability in the Advanced Networking Option component of Oracle Database Server. Supported versions that are affected are 12.1.0.2, 12.2.0.1 and 19c. Difficult to exploit vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise Advanced Networking Option. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Advanced Networking Option, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Advanced Networking Option. Note: The July 2021 Critical Patch Update introduces a number of Native Network Encryption changes to deal with vulnerability CVE-2021-2351 and prevent the use of weaker ciphers. Customers should review: "Changes in Native Network Encryption with the July 2021 Critical Patch Update" (Doc ID 2791571.1). CVSS 3.1 Base Score 8.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refpacketstormsecurity.com/files/165255/Oracle-Database-Protection-Mechanism-Bypass.htmlRefpacketstormsecurity.com/files/165258/Oracle-Database-Weak-NNE-Integrity-Key-Derivation.htmlRefseclists.org/fulldisclosure/2021/Dec/19Refseclists.org/fulldisclosure/2021/Dec/20Refwww.oracle.com/security-alerts/cpuapr2022.htmlRefwww.oracle.com/security-alerts/cpujan2022.htmlRefwww.oracle.com/security-alerts/cpujan2023.htmlRefwww.oracle.com/security-alerts/cpujul2021.htmlRefwww.oracle.com/security-alerts/cpujul2022.htmlRefwww.oracle.com/security-alerts/cpuoct2021.html

How CyberStrike helps

Frequently asked questions

What is CVE-2021-2351?

CVE-2021-2351 is a high-severity vulnerability. It was published on July 21, 2021 and has a CVSS 3.1 base score of 8.3 (HIGH).

How severe is CVE-2021-2351?

This vulnerability has a CVSS 3.1 base score of 8.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-2351?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-2351?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-2351 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related HIGH CVEs from 2021

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999