CVE-2021-2356

MEDIUM

MySQL Server <= 5.7.34 and <= 8.0.25 - Authenticated Denial of Service and Data Manipulation via Replication

Title source: llm

Description

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Replication). Supported versions that are affected are 5.7.34 and prior and 8.0.25 and prior. Difficult to exploit vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server as well as unauthorized update, insert or delete access to some of MySQL Server accessible data. CVSS 3.1 Base Score 5.9 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H).

References (4)

Core 4

Core References

Patch, Vendor Advisory x_refsource_misc

https://www.oracle.com/security-alerts/cpujul2021.html

Third Party Advisory x_refsource_confirm

https://security.netapp.com/advisory/ntap-20210723-0001/

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6OO2Q5PIFURXLLKCIJE6XF6VL4LLMNO5/

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OPJAGVMRKODR4QIXQSVEM4BLRZUM7P3R/

Scores

CVSS v3 5.9

EPSS 0.0024

EPSS Percentile 47.5%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

Status published

Products (4)

fedoraproject/fedora 33

fedoraproject/fedora 34

netapp/oncommand_insight

oracle/mysql 5.0.0 - 5.7.34

Published Jul 21, 2021

Tracked Since Feb 18, 2026