PT-2021-6837 · Oracle+8 · Mysql Server+7

Published 2021-07-20 · Updated 2021-12-31 · CVE-2021-2340

Positive Technologies (AI Summary)

CVSS v2.0

4.0

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions MySQL Server versions 8.0.25 and prior

Description The issue is related to errors in resource release in the Memcached component of the MySQL Server. It allows a remote attacker to cause a denial of service. Successful attacks can result in unauthorized ability to cause a partial denial of service of MySQL Server.

Recommendations For versions 8.0.25 and prior, consider disabling the Memcached component as a temporary workaround until a patch is available. Restrict access to the Memcached component to minimize the risk of exploitation. Avoid using the Memcached component in the affected MySQL Server until the issue is resolved.

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

AZL-6694

BDU:2022-02262

CESA-2021_3590

CVE-2021-2340

OESA-2021-1311

RHSA-2021:3590

RHSA-2021:3811

RHSA-2021_3590

RLSA-2021:3590

USN-5022-1

Affected Products

Alt Linux

Almalinux

Centos

Linuxmint

Mysql Server

Red Hat

Rocky Linux

Ubuntu

References · 350

• 🔥 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://ubuntu.com/security/CVE-2021-2389 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-2340 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-2340 · Vendor Advisory
• https://errata.rockylinux.org/RLSA-2021:3590 · Vendor Advisory
• https://oracle.com/security-alerts/cpujul2021.html · Vendor Advisory
• 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
• https://osv.dev/vulnerability/AZL-6694 · Vendor Advisory