Oracle MySQL Server up to 8.0.21 Optimizer denial of service

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

Summaryinfo

A vulnerability was found in Oracle MySQL Server up to 8.0.21. It has been rated as critical. Impacted is an unknown function of the component Optimizer. The manipulation leads to denial of service. This vulnerability is documented as CVE-2021-2030. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Oracle MySQL Server up to 8.0.21 (Database Software). It has been rated as critical. This issue affects an unknown function of the component Optimizer. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability.

The weakness was released 01/20/2021 as Oracle Critical Patch Update Advisory - January 2021. It is possible to read the advisory at oracle.com. The identification of this vulnerability is CVE-2021-2030. 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.

The vulnerability scanner Nessus provides a plugin with the ID 250063 (Linux Distros Unpatched Vulnerability : CVE-2021-2030), which helps to determine the existence of the flaw in a target environment.

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

The vulnerability is also documented in the vulnerability database at Tenable (250063). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 250063
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2021-2030

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

12/09/2020 🔍
01/20/2021 +42 days 🔍
01/20/2021 +0 days 🔍
01/20/2021 +0 days 🔍
08/17/2025 +1670 days 🔍

Sourcesinfo

Vendor: oracle.com

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

CVE: CVE-2021-2030 (🔍)
GCVE (CVE): GCVE-0-2021-2030
GCVE (VulDB): GCVE-100-168371

Entryinfo

Created: 01/20/2021 19:47
Updated: 08/17/2025 15:55
Changes: 01/20/2021 19:47 (40), 02/17/2021 12:50 (5), 02/17/2021 12:57 (8), 08/17/2025 15:55 (16)
Complete: 🔍
Cache ID: 216::103

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

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