2021-2385 | Oracle MySQL Server Replication unknown vulnerability

By Max On Jul 24, 2021

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4.8	$0-$5k	0.62

A vulnerability was found in Oracle MySQL Server up to 5.7.34/8.0.25 (Database Software) and classified as critical. Affected by this issue is an unknown part of the component Replication. Impacted is integrity, and availability. CVE summarizes:

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 high 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 5.0 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:H).

The weakness was presented 07/20/2021 as Oracle Critical Patch Update Advisory – July 2021. The advisory is shared for download at oracle.com. This vulnerability is handled as CVE-2021-2385 since 12/09/2020. The exploitation is known to be difficult. The attack may be launched remotely. Additional levels of successful authentication are necessary for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/24/2021).

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

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