CVE-2021-21973
Quick assessment
Affected
n/a VMware vCenter Server
Exploitation
Confirmed exploitation in the wild; remediate immediately
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Vmware VMware vCenter Server是美国威睿（Vmware）公司的一套服务器和虚拟化管理软件。该软件提供了一个用于管理VMware vSphere环境的集中式平台，可自动实施和交付虚拟基础架构。 VMware vCenter Server 存在代码问题漏洞，该漏洞源于vCenter Server插件中的url验证不当。
Public Exploits 1
Nuclei · 1
CVE-2021-21973.yaml [template]
In-the-Wild Activity Observed
cisa_kev · confirmed
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-21973
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The vSphere Client (HTML5) contains an SSRF (Server Side Request Forgery) vulnerability due to improper validation of URLs in a vCenter Server plugin. A malicious actor with network access to port 443 may exploit this issue by sending a POST request to vCenter Server plugin leading to information disclosure. This affects: VMware vCenter Server (7.x before 7.0 U1c, 6.7 before 6.7 U3l and 6.5 before 6.5 U3n) and VMware Cloud Foundation (4.x before 4.2 and 3.x before 3.10.1.2).
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 vCenter Server 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Vmware VMware vCenter Server是美国威睿（Vmware）公司的一套服务器和虚拟化管理软件。该软件提供了一个用于管理VMware vSphere环境的集中式平台，可自动实施和交付虚拟基础架构。 VMware vCenter Server 存在代码问题漏洞，该漏洞源于vCenter Server插件中的url验证不当。
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)
Shenlong Deep Dive — AI Deep Analysis
10-question deep dive: root cause, exploitation, mitigation, urgency. Read summary free, full version requires login.
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | VMware vCenter Server | 7.x before 7.0 U1c | - |
|
| - | VMware Cloud Foundation | 4.x before 4.2 | - |
|
II. Public POCs for CVE-2021-21973
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | automate me! | https://github.com/freakanonymous/CVE-2021-21973-Automateme | POC Details |
| 2 | VMware vSphere (HTML5) is susceptible to server-side request forgery due to improper validation of URLs in a vCenter Server plugin. An attacker with network access to port 443 can exploit this issue by sending a POST request to the plugin. This affects VMware vCenter Server (7.x before 7.0 U1c, 6.7 before 6.7 U3l, and 6.5 before 6.5 U3n) and VMware Cloud Foundation (4.x before 4.2 and 3.x before 3.10.1.2). | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-21973.yaml | POC Details |
| 3 | None | https://github.com/Threekiii/Awesome-POC/blob/master/%E4%BA%91%E5%AE%89%E5%85%A8%E6%BC%8F%E6%B4%9E/VMware%20vCenter%20Server%20%E6%9C%8D%E5%8A%A1%E5%99%A8%E7%AB%AF%E8%AF%B7%E6%B1%82%E4%BC%AA%E9%80%A0%E6%BC%8F%E6%B4%9E%20CVE-2021-21973.md | POC Details |
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Vendor Advisories for CVE-2021-21973 (1)
-
https://www.vmware.com/security/advisories/VMSA-2021-0002.html x_refsource_CONFIRM
Same Patch Batch · n/a · 2021-02-24 · 10 CVEs total
| CVE-2020-11987 | Apache Batik 代码问题漏洞 | |
| CVE-2021-27645 | GNU C Library和glibc 资源管理错误漏洞 | |
| CVE-2020-12702 | eWeLink mobile application 加密问题漏洞 | |
| CVE-2021-3355 | LightCMS v跨站脚本漏洞 | |
| CVE-2020-28599 | Torsten Paul Openscad 缓冲区错误漏洞 | |
| CVE-2021-22667 | Advantech BB-ESWGP506-2SFP-T 信任管理问题漏洞 | |
| CVE-2021-21972 | VMware vSphere Client 路径遍历漏洞 | |
| CVE-2021-21974 | 威睿 VMware ESXi 缓冲区错误漏洞 | |
| CVE-2020-11988 | Apache XmlGraphics Commons 代码问题漏洞 |
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V. Comments for CVE-2021-21973
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