CVE-2021-2471: High severity Oracle Communications Cloud Native Core Console vulnerability
Difficult to exploit vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Connectors. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all MySQL Connectors accessible data and unauthorized ability to cause a hang or frequently repeatable crash.
External Reference:
https://www.oracle.com/security-alerts/cpuoct2021.html
Other sources
MySQL Connector/J has no security check when external general entities are included in XML sources, consequently, there exists an XML External Entity(XXE) vulnerability. A successful attack can access critical data and gain full control/access to all MySQL Connectors' accessible data without any authorization.
Vulnerability in the MySQL Connectors product of Oracle MySQL (component: Connector/J). Supported versions that are affected are 8.0.26 and prior. Difficult to exploit vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Connectors. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all MySQL Connectors accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Connectors. CVSS 3.1 Base Score 5.9 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:H).
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
redhat/MySQL Connector/Jto a version that resolves this vulnerability.Fixed in 8.0.27 - Upgrade
Upgrade
Oracle MySQL Connector/J (MySQL Connectors product)to a version that resolves this vulnerability.Fixed in 8.0.26 and prior
Event History
Parent advisories
This vulnerability appears in the following advisories.
Frequently Asked Questions
What is CVE-2021-2471?
CVE-2021-2471 is a vulnerability in the MySQL Connectors product of Oracle MySQL.
What is the severity of CVE-2021-2471?
CVE-2021-2471 has a severity score of 7.4, which is considered high.
How does CVE-2021-2471 affect MySQL Connector/J?
CVE-2021-2471 affects MySQL Connector/J versions 8.0.26 and prior.
How can an attacker exploit CVE-2021-2471?
CVE-2021-2471 can be exploited by a high privileged attacker with network access via multiple protocols to compromise MySQL Connectors.
How do I fix CVE-2021-2471?
To fix CVE-2021-2471, update MySQL Connector/J to version 8.0.27 or later.