Oracle MySQL Server up to 5.6.50/5.7.32/8.0.22 Optimizer denial of service

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CVSS Meta Temp Score
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CTI Interest Score
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4.7$0-$5k0.00

A vulnerability, which was classified as critical, was found in Oracle MySQL Server up to 5.6.50/5.7.32/8.0.22 (Database Software). This affects an unknown code of the component Optimizer. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. This is going to have an impact on availability. The summary by CVE is:

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 5.6.50 and prior, 5.7.32 and prior and 8.0.22 and prior. Easily exploitable 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. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

The weakness was published 01/20/2021 as Oracle Critical Patch Update Advisory - January 2021. It is possible to read the advisory at oracle.com. This vulnerability is uniquely identified as CVE-2021-2060 since 12/09/2020. The exploitability is told to be easy. It is possible to initiate the attack remotely. The exploitation requires an enhanced level of successful 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.

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VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.7

VulDB Base Score: 4.9
VulDB Temp Score: 4.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

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VulDB Base Score: 🔒
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Exploitinginfoedit

Class: Denial of service
CWE: CWE-404
ATT&CK: T1499

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

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Current Price Estimation: 🔒

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Recommended: Upgrade
Status: 🔍

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Timelineinfoedit

12/09/2020 CVE assigned
01/20/2021 +42 days Advisory disclosed
01/20/2021 +0 days Countermeasure disclosed
01/20/2021 +0 days VulDB entry created
02/17/2021 +28 days VulDB last update

Sourcesinfoedit

Vendor: https://www.oracle.com

Advisory: Oracle Critical Patch Update Advisory - January 2021
Status: Confirmed

CVE: CVE-2021-2060 (🔒)

Entryinfoedit

Created: 01/20/2021 07:47 PM
Updated: 02/17/2021 01:35 PM
Changes: (8) vulnerability_cvss2_nvd_av vulnerability_cvss2_nvd_ac vulnerability_cvss2_nvd_au vulnerability_cvss2_nvd_ci vulnerability_cvss2_nvd_ii vulnerability_cvss2_nvd_ai source_cve_cna vulnerability_cvss2_nvd_basescore
Complete: 🔍

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