#VU52391 Improper input validation in MySQL Server - CVE-2021-2307

Vulnerability identifier: #VU52391

Vulnerability risk: Low

CVSSv4.0: 4.2 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-2307

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
MySQL Server
Server applications / Database software

Vendor: Oracle

Description

The vulnerability allows a local non-authenticated attacker to read and manipulate data.

The vulnerability exists due to improper input validation within the Server: Packaging component in MySQL Server. A local non-authenticated attacker can exploit this vulnerability to read and manipulate data.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

MySQL Server: 5.7.0 - 5.7.33, 8.0.0 - 8.0.23

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External links
https://www.oracle.com/security-alerts/cpuapr2021.html

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.