PT-2021-6827 · Oracle+8 · Mysql Server+7

Girlelecta · Published 2021-07-20 · Updated 2021-12-31 · CVE-2021-2418

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 8.0.25 and prior

Description The issue is related to errors in resource release in the MySQL Server product, specifically in the Server: Optimizer component. This allows a remote attacker to cause a denial of service, potentially leading to a hang or frequent crashes of the MySQL Server. The vulnerability can be easily exploited by a high-privileged attacker with network access via multiple protocols.

Recommendations For MySQL Server versions 8.0.25 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. Additionally, monitor the server for signs of denial of service attacks and be prepared to restart the service if necessary. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

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:2022-02252

CESA-2021_3590

CVE-2021-2418

OESA-2021-1375

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 · 361

• 🔥 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://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://ubuntu.com/security/CVE-2021-2402 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-2340 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-2422 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-2437 · Vendor Advisory