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CVE-2021-3499

Quick assessment

Affected
n/a openshift/ovn-kubernetes
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Kubernetes（K8s）是云原生计算基金会（Cloud Native Computing Foundation）的一个开源系统，用于自动部署、扩展和管理容器化应用程序。 OVN Kubernetes 0.3.0版本及之前版本存在安全漏洞，该漏洞源于当存在多个dns规则时，出口防火墙无法可靠地应用防火墙规则。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.80% · P55

Possible ATT&CK Techniques 1 AI

T1565.001 · Stored Data Manipulation
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I. Basic Information for CVE-2021-3499

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in OVN Kubernetes in versions up to and including 0.3.0 where the Egress Firewall does not reliably apply firewall rules when there is multiple DNS rules. It could lead to potentially lose of confidentiality, integrity or availability of a service.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
OVN Kubernetes 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kubernetes（K8s）是云原生计算基金会（Cloud Native Computing Foundation）的一个开源系统，用于自动部署、扩展和管理容器化应用程序。 OVN Kubernetes 0.3.0版本及之前版本存在安全漏洞，该漏洞源于当存在多个dns规则时，出口防火墙无法可靠地应用防火墙规则。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- openshift/ovn-kubernetes All ovn-kubernetes versions up to and including 0.3.0 -

II. Public POCs for CVE-2021-3499

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III. Intelligence Information for CVE-2021-3499

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Vendor Advisories for CVE-2021-3499 (1)

Same Patch Batch · n/a · 2021-06-02 · 54 CVEs total

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CVE-2020-22046 FFmpeg 安全漏洞
CVE-2021-3468 Avahi 安全漏洞
CVE-2021-3522 GStreamer 缓冲区错误漏洞
CVE-2021-3530 GNU Binutils 安全漏洞

Showing top 20 of 54 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same vendor: n/a
Same weakness: CWE-863

V. Comments for CVE-2021-3499

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