CVE-2021-2390: MySQL memcached Plugin Integer Underflow Remote Code Execution Vulnerability
First published: Tue Jul 20 2021(Updated: )
Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are 5.7.34 and prior and 8.0.25 and prior. Difficult to exploit vulnerability allows unauthenticated 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. CVSS 3.1 Base Score 5.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H).
Credit: secalert_us@oracle.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/mysql | <5.7.35 | 5.7.35 |
| redhat/mysql | <8.0.26 | 8.0.26 |
| MySQL Server | >=5.7.0<=5.7.34 | |
| MySQL Server | >=8.0.0<=8.0.25 | |
| NetApp OnCommand Insight | ||
| MySQL |
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Reference Links
- https://security.netapp.com/advisory/ntap-20210723-0001/
- https://www.oracle.com/security-alerts/cpujul2021.html
- https://www.zerodayinitiative.com/advisories/ZDI-21-881/
- http://www.oracle.com/security-alerts/cpujul2021.html#AppendixMSQL
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1992821
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1992822
- https://access.redhat.com/errata/RHSA-2021:3590
- https://access.redhat.com/security/cve/cve-2021-2390
- https://access.redhat.com/errata/RHSA-2021:3811
- https://bugzilla.redhat.com/show_bug.cgi?id=1992310
Frequently Asked Questions
What is the severity of CVE-2021-2390?
CVE-2021-2390 is classified as a difficult to exploit vulnerability that allows unauthenticated attackers to compromise MySQL Server.
How do I fix CVE-2021-2390?
To fix CVE-2021-2390, upgrade your MySQL Server to version 5.7.35 or 8.0.26 or later.
Which versions of MySQL Server are affected by CVE-2021-2390?
MySQL Server versions 5.7.34 and earlier, and 8.0.25 and earlier are affected by CVE-2021-2390.
Can CVE-2021-2390 be exploited remotely?
Yes, CVE-2021-2390 can be exploited by unauthenticated attackers with network access via multiple protocols.
What component of MySQL Server does CVE-2021-2390 affect?
CVE-2021-2390 affects the InnoDB component of the MySQL Server product.
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