2021-2411 | Oracle MySQL Cluster Cluster: JS module denial of service

By Max On Jul 25, 2021

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3.6	$0-$5k	0.46

A vulnerability was found in Oracle MySQL Cluster up to 8.0.25 (Database Software) and classified as problematic. This issue affects some unknown functionality of the component Cluster: JS module. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. Impacted is availability. The summary by CVE is:

Vulnerability in the MySQL Cluster product of Oracle MySQL (component: Cluster: JS module). Supported versions that are affected are 8.0.25 and prior. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Cluster. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of MySQL Cluster. CVSS 3.1 Base Score 3.7 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L).

The weakness was published 07/20/2021 as Oracle Critical Patch Update Advisory – July 2021. It is possible to read the advisory at oracle.com. The identification of this vulnerability is CVE-2021-2411 since 12/09/2020. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/25/2021). The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

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

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