PT-2021-1892 · Oracle+6 · Mysql Server+5

Hangfan Zhang + 2 · Published 2020-11-13 · Updated 2022-01-04 · CVE-2021-2030

Positive Technologies (AI Summary)

CVSS v2.0

6.8

Medium

Base vector

AV:N/AC:L/Au:S/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions MySQL Server versions 8.0.21 and prior

Description The issue exists due to insufficient input validation in the Server: Optimizer component of the MySQL Server system. This allows a remote attacker to cause a denial of service. Successful attacks can result in the ability to cause a hang or frequently repeatable crash of the MySQL Server.

Recommendations For MySQL Server versions 8.0.21 and prior, update to a version that contains a fix for this issue. As a temporary workaround, consider restricting network access to the MySQL Server to minimize the risk of exploitation.

Exploit

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

ALSA-2021:3590

ALT-PU-2020-3284

ALT-PU-2021-2380

ALT-PU-2021-3668

BDU:2021-00663

CESA-2021_3590

CVE-2021-2030

OESA-2021-1088

RHSA-2021:3590

RHSA-2021:3811

RHSA-2021_3590

RLSA-2021:3590

Affected Products

Alt Linux

Almalinux

Centos

Mysql Server

Red Hat

Rocky Linux

References · 330

• 🔥 https://github.com/terorie/cve-2021-3449 · Exploit
• 🔥 https://github.com/riptl/cve-2021-3449 · Exploit
• 🔥 https://github.com/motikan2010/CVE-2020-5398 · Exploit
• 🔥 https://github.com/LeadroyaL/cve-2019-14540-exploit · Exploit
• 🔥 https://github.com/irsl/CVE-2020-1967 · Exploit
• 🔥 https://github.com/MBHudson/CVE-2020-1971 · Exploit
• https://oracle.com/security-alerts/cpujan2021.html · Vendor Advisory
• https://security.gentoo.org/glsa/202105-27 · Vendor Advisory
• https://errata.rockylinux.org/RLSA-2021:3590 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-3011 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-2016 · Security Note
• https://osv.dev/vulnerability/ALSA-2021:3590 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-2030 · Vendor Advisory
• https://osv.dev/vulnerability/RLSA-2021:3590 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-2957 · Security Note