PT-2021-6557 · Oracle+8 · Mysql Server+7

Published 2021-07-20 · Updated 2021-12-31 · CVE-2021-2342

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 5.7.34 and prior MySQL Server versions 8.0.25 and prior

Description The issue is related to errors in resource release in the MySQL Server component, specifically in the Optimizer subsystem. 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 5.7.34 and prior, update to a version later than 5.7.34 to resolve the issue. For MySQL Server versions 8.0.25 and prior, update to a version later than 8.0.25 to resolve the issue. As a temporary workaround, consider restricting network access to the MySQL Server to minimize the risk of exploitation.

Exploit

Fix

Improper Resource Release

Weakness Enumeration

CWE-404

Related Identifiers

ALSA-2021:3590

ALT-PU-2021-2461

ALT-PU-2021-2477

ALT-PU-2021-2571

ALT-PU-2021-3668

BDU:2022-01819

CESA-2021_3590

CVE-2021-2342

OESA-2021-1375

RHSA-2021:3590

RHSA-2021:3811

RHSA-2021_3590

RLSA-2021:3590

USN-5022-1

USN-5022-3

Affected Products

Alt Linux

Almalinux

Centos

Linuxmint

Mysql Server

Red Hat

Rocky Linux

Ubuntu

References · 376

• 🔥 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://nvd.nist.gov/vuln/detail/CVE-2021-2427 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-2342 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-2389 · Vendor Advisory
• https://errata.rockylinux.org/RLSA-2021:3590 · Vendor Advisory
• https://oracle.com/security-alerts/cpujul2021.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-2370 · Security Note
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6OO2Q5PIFURXLLKCIJE6XF6VL4LLMNO5 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-2402 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-2340 · Vendor Advisory