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CVE-2021-20267

Quick assessment

Affected
n/a openstack-neutron
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.

OpenStack是美国国家航空航天局（National Aeronautics and Space Administration）和美国Rackspace公司合作研发的一个云平台管理项目。 Openstack Neutron 存在数据伪造问题漏洞，该漏洞源于在默认Open vSwitch防火墙规则中发现了一个缺陷，攻击者可通过发送精心设计的数据包，任何控制连接到虚拟交换机的服务器实例的人都可以模拟网络上其他系统的IPv6地址，从而导致拒绝服务。以下产品及型号会受到影响：openstack-neutron

AI Predicted 7.5 Difficulty: Easy EPSS 1.02% · P63
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I. Basic Information for CVE-2021-20267

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in openstack-neutron's default Open vSwitch firewall rules. By sending carefully crafted packets, anyone in control of a server instance connected to the virtual switch can impersonate the IPv6 addresses of other systems on the network, resulting in denial of service or in some cases possibly interception of traffic intended for other destinations. Only deployments using the Open vSwitch driver are affected. Source: OpenStack project. Versions before openstack-neutron 15.3.3, openstack-neutron 16.3.1 and openstack-neutron 17.1.1 are affected.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
对数据真实性的验证不充分
Source: CVE Program / CVE List V5
Vulnerability Title
OpenStack 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenStack是美国国家航空航天局（National Aeronautics and Space Administration）和美国Rackspace公司合作研发的一个云平台管理项目。 Openstack Neutron 存在数据伪造问题漏洞，该漏洞源于在默认Open vSwitch防火墙规则中发现了一个缺陷，攻击者可通过发送精心设计的数据包，任何控制连接到虚拟交换机的服务器实例的人都可以模拟网络上其他系统的IPv6地址，从而导致拒绝服务。以下产品及型号会受到影响：openstack-neutron
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
- openstack-neutron openstack-neutron 15.3.3, openstack-neutron 16.3.1, openstack-neutron 17.1.1 -

II. Public POCs for CVE-2021-20267

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III. Intelligence Information for CVE-2021-20267

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Vendor Advisories for CVE-2021-20267 (1)

Other References for CVE-2021-20267 (1)

Same Patch Batch · n/a · 2021-05-28 · 43 CVEs total

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CVE-2021-20236 ZeroMQ 缓冲区错误漏洞
CVE-2021-20237 ZeroMQ 资源管理错误漏洞
CVE-2021-20239 Linux kernel 缓冲区错误漏洞
CVE-2021-20240 gdk-pixbuf 数字错误漏洞
CVE-2021-20278 Kiali 授权问题漏洞
CVE-2021-20292 Nouveau 资源管理错误漏洞
CVE-2021-27032 Autodesk Licensing Services 访问控制错误漏洞

Showing top 20 of 43 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: openstack-neutron
Same vendor: n/a
Same weakness: CWE-345

V. Comments for CVE-2021-20267

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