Oracle MySQL Server up to 5.7.28 Pluggable Auth denial of service

Summaryinfo

A vulnerability was found in Oracle MySQL Server up to 5.7.28. It has been classified as critical. Affected by this vulnerability is an unknown functionality of the component Pluggable Auth. This manipulation causes denial of service. This vulnerability is handled as CVE-2020-2790. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Oracle MySQL Server up to 5.7.28 (Database Software) and classified as critical. Affected by this vulnerability is an unknown code block of the component Pluggable Auth. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. The summary by CVE is:

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Pluggable Auth). Supported versions that are affected are 5.7.28 and prior. Easily exploitable 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. CVSS 3.0 Base Score 6.5 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

The weakness was released 04/15/2020 as Oracle Critical Patch Update Advisory - April 2020 as confirmed advisory (Website). It is possible to read the advisory at oracle.com. This vulnerability is known as CVE-2020-2790. The attack can be launched remotely. The requirement for exploitation is a single authentication. The technical details are unknown and an exploit is not publicly available. 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.

Entries connected to this vulnerability are available at VDB-153686, VDB-153290, VDB-153291 and VDB-153293. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Database Software

Vendor

• Oracle

Name

• MySQL Server

Version

• 5.7.0
• 5.7.1
• 5.7.2
• 5.7.3
• 5.7.4
• 5.7.5
• 5.7.6
• 5.7.7
• 5.7.8
• 5.7.9
• 5.7.10
• 5.7.11
• 5.7.12
• 5.7.13
• 5.7.14
• 5.7.15
• 5.7.16
• 5.7.17
• 5.7.18
• 5.7.19
• 5.7.20
• 5.7.21
• 5.7.22
• 5.7.23
• 5.7.24
• 5.7.25
• 5.7.26
• 5.7.27
• 5.7.28

License

• open-source

Website

• Vendor: https://www.oracle.com

CPE 2.3info

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CPE 2.2info

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Entryinfo

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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