CVE-2021-2356: Medium severity mysql vulnerability

Q: What is the severity of CVE-2021-2356?

CVE-2021-2356 is classified as a difficult to exploit vulnerability that affects certain versions of MySQL Server.

Q: How do I fix CVE-2021-2356?

To remediate CVE-2021-2356, upgrade MySQL Server to version 5.7.35 or 8.0.26 or later.

Q: Which MySQL versions are affected by CVE-2021-2356?

CVE-2021-2356 affects MySQL versions 5.7.34 and earlier, as well as 8.0.25 and earlier.

Q: What kind of attacker can exploit CVE-2021-2356?

CVE-2021-2356 can be exploited by a low privileged attacker with network access via multiple protocols.

Q: Is CVE-2021-2356 present in Red Hat's MySQL packages?

Yes, CVE-2021-2356 is present in Red Hat's MySQL packages, specifically in versions prior to 5.7.35 and 8.0.26.

Published Jul 20, 2021

Updated

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Replication). Supported versions that are affected are 5.7.34 and prior and 8.0.25 and prior. Difficult to exploit vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server as well as unauthorized update, insert or delete access to some of MySQL Server accessible data.

External References:

http://www.oracle.com/security-alerts/cpujul2021.html#AppendixMSQL

Other sources

— MITRE

Affected Software

7 affected componentsFixes available

redhat/mysql<5.7.35

5.7.35

redhat/mysql<8.0.26

8.0.26

Oracle MySQL>=5.0.0<=5.7.34

Oracle MySQL>=8.0.0<=8.0.25

NetApp OnCommand Insight

fedoraproject fedora=33

fedoraproject fedora=34

Remediation

Patch Available

https://www.oracle.com/security-alerts/cpujul2021.html

Event History

Jul 20, 2021

CVE Published

via MITRE·10:43 PM

Data Sourced

via MITRE·10:43 PM

DescriptionSeverityWeakness

Frequently Asked Questions

What is the severity of CVE-2021-2356?