Kubernetes DNS Resolution toctou

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
2.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Kubernetes. This issue affects some unknown processing of the component DNS Resolution Handler. The manipulation leads to toctou. This vulnerability is listed as CVE-2020-8562. The attack must be carried out from within the local network. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Kubernetes (Virtualization Software) (affected version unknown). This issue affects an unknown functionality of the component DNS Resolution Handler. The manipulation with an unknown input leads to a toctou vulnerability. Using CWE to declare the problem leads to CWE-367. The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state. Impacted is confidentiality.

The weakness was presented 02/01/2022 as 10149. The advisory is shared at github.com. The identification of this vulnerability is CVE-2020-8562 since 02/03/2020. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 256688 (Linux Distros Unpatched Vulnerability : CVE-2020-8562), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (256688). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.4
VulDB Meta Temp Score: 2.4

VulDB Base Score: 2.0
VulDB Temp Score: 2.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 3.1
NVD Vector: 🔍

CNA Base Score: 2.2
CNA Vector (Kubernetes): 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Toctou
CWE: CWE-367 / CWE-362
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: 256688
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2020-8562

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/03/2020 🔍
02/01/2022 +729 days 🔍
02/01/2022 +0 days 🔍
06/02/2026 +1582 days 🔍

Sourcesinfo

Product: github.com

Advisory: 10149
Status: Confirmed

CVE: CVE-2020-8562 (🔍)
GCVE (CVE): GCVE-0-2020-8562
GCVE (VulDB): GCVE-100-192053

Entryinfo

Created: 02/01/2022 15:20
Updated: 06/02/2026 04:29
Changes: 02/01/2022 15:20 (46), 02/04/2022 09:19 (1), 08/27/2025 15:12 (16), 06/02/2026 04:29 (19)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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