CVE-2021-21994
Quick assessment
Affected
n/a VMware ESXi and VMware Cloud Foundation
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.
Vmware VMware ESXi是美国威睿（Vmware）公司的一套可直接安装在物理服务器上的服务器虚拟化平台。 VMware ESXi 中存在授权问题漏洞，该漏洞源于产品的 SFCB 的鉴权功能存在漏洞，攻击者可通过对 5989 端口发送特殊的请求来绕过SFCB认证。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-21994
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
SFCB (Small Footprint CIM Broker) as used in ESXi has an authentication bypass vulnerability. A malicious actor with network access to port 5989 on ESXi may exploit this issue to bypass SFCB authentication by sending a specially crafted request.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
VMware ESXi 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Vmware VMware ESXi是美国威睿（Vmware）公司的一套可直接安装在物理服务器上的服务器虚拟化平台。 VMware ESXi 中存在授权问题漏洞，该漏洞源于产品的 SFCB 的鉴权功能存在漏洞，攻击者可通过对 5989 端口发送特殊的请求来绕过SFCB认证。
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 |
|---|---|---|---|---|
| - | VMware ESXi and VMware Cloud Foundation | VMware ESXi(7.0 before ESXi70U2-17630552, 6.7 before ESXi670-202103101-SG, 6.5 before ESXi650-202107401-SG) and VMware Cloud Foundation (4.x, 3.x before 3.10.2) | - |
|
II. Public POCs for CVE-2021-21994
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2021-21994 (1)
-
https://www.vmware.com/security/advisories/VMSA-2021-0014.html x_refsource_MISC
Same Patch Batch · n/a · 2021-07-13 · 42 CVEs total
| CVE-2020-20252 | MikroTik RouterOS 代码问题漏洞 | |
| CVE-2021-36122 | Echo ShareCare 参数注入漏洞 | |
| CVE-2020-22873 | Jsish 缓冲区错误漏洞 | |
| CVE-2020-22874 | Jsish 输入验证错误漏洞 | |
| CVE-2020-22875 | Jsish 输入验证错误漏洞 | |
| CVE-2020-22876 | QuickJS 缓冲区错误漏洞 | |
| CVE-2020-22882 | moddable 输入验证错误漏洞 | |
| CVE-2020-22884 | Espruino 缓冲区错误漏洞 | |
| CVE-2020-22885 | ccxvii mujs 缓冲区错误漏洞 | |
| CVE-2020-22886 | ccxvii mujs 缓冲区错误漏洞 | |
| CVE-2020-22907 | Jshish 缓冲区错误漏洞 | |
| CVE-2021-36121 | Echo ShareCare 代码问题漏洞 | |
| CVE-2021-31217 | SolarWinds DameWare Mini Remote Control 权限许可和访问控制问题漏洞 | |
| CVE-2021-22000 | VMware Thinapp 代码问题漏洞 | |
| CVE-2021-21995 | VMware ESXi 缓冲区错误漏洞 | |
| CVE-2020-19717 | Bento4 代码问题漏洞 | |
| CVE-2020-19718 | Bento4 代码问题漏洞 | |
| CVE-2020-19719 | Bento4 安全漏洞 | |
| CVE-2020-19720 | Bento4 缓冲区错误漏洞 | |
| CVE-2020-19721 | Bento4 缓冲区错误漏洞 |
Showing top 20 of 42 CVEs. View all on vendor page → →
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Same vendor: n/a
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V. Comments for CVE-2021-21994
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