CVE-2021-20323
Quick assessment
Affected
n/a keycloak-services
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Red Hat Keycloak是美国红帽（Red Hat）公司的一套为现代应用和服务提供身份验证和管理功能的软件。 Red Hat Keycloak存在跨站脚本漏洞，该漏洞源于POST请求参数缺少验证。
Public Exploits 1
Nuclei · 1
CVE-2021-20323.yaml [template]
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1189 · Drive-by Compromise
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I. Basic Information for CVE-2021-20323
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A POST based reflected Cross Site Scripting vulnerability on has been identified in Keycloak.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Red Hat Keycloak 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat Keycloak是美国红帽（Red Hat）公司的一套为现代应用和服务提供身份验证和管理功能的软件。 Red Hat Keycloak存在跨站脚本漏洞，该漏洞源于POST请求参数缺少验证。
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)
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 |
|---|---|---|---|---|
| - | keycloak-services | keycloak 17.0.0 | - |
|
II. Public POCs for CVE-2021-20323
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | None | https://github.com/ndmalc/CVE-2021-20323 | POC Details |
| 2 | Tool for finding CVE-2021-20323 | https://github.com/Cappricio-Securities/CVE-2021-20323 | POC Details |
| 3 | Exploitation Scanner Cross Site Scripting vulnerability in Keycloak. | https://github.com/cscpwn0sec/CVE-2021-20323 | POC Details |
| 4 | Keycloak 10.0.0 to 18.0.0 contains a cross-site scripting vulnerability via the client-registrations endpoint. On a POST request, the application does not sanitize an unknown attribute name before including it in the error response with a 'Content-Type' of text/hml. Once reflected, the response is interpreted as HTML. This can be performed on any realm present on the Keycloak instance. Since the bug requires Content-Type application/json and is submitted via a POST, there is no common path to exploit that has a user impact. | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-20323.yaml | POC Details |
AI-Generated POC
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Vendor Advisories for CVE-2021-20323 (1)
-
https://bugzilla.redhat.com/show_bug.cgi?id=2013577 x_refsource_MISC
Same Patch Batch · n/a · 2022-03-25 · 53 CVEs total
| CVE-2022-25582 | ClassCMS 跨站脚本漏洞 | |
| CVE-2022-0897 | Red Hat libvirt 安全漏洞 | |
| CVE-2022-0435 | Linux kernel 缓冲区错误漏洞 | |
| CVE-2021-3933 | ILM OpenEXR 输入验证错误漏洞 | |
| CVE-2021-4203 | Linux kernel 资源管理错误漏洞 | |
| CVE-2021-4147 | Red Hat libvirt 安全漏洞 | |
| CVE-2021-3941 | ILM OpenEXR 数字错误漏洞 | |
| CVE-2022-0330 | Linux kernel 缓冲区错误漏洞 | |
| CVE-2021-43091 | YesWiki SQL注入漏洞 | |
| CVE-2022-25577 | ALF-BanCo 信任管理问题漏洞 | |
| CVE-2022-25574 | DouPHP 跨站脚本漏洞 | |
| CVE-2022-26263 | Yonyou u8 跨站脚本漏洞 | |
| CVE-2022-27881 | OpenBSD 安全漏洞 | |
| CVE-2022-27882 | OpenBSD 安全漏洞 | |
| CVE-2021-43636 | TotoLink T10 安全漏洞 | |
| CVE-2021-22100 | cloud foundry 资源管理错误漏洞 | |
| CVE-2021-4157 | Linux kernel 缓冲区错误漏洞 | |
| CVE-2021-4202 | Linux kernel 资源管理错误漏洞 | |
| CVE-2021-20290 | OpenSC 安全漏洞 | |
| CVE-2021-3567 | SUSE OpenStack Cloud 缓冲区错误漏洞 |
Showing top 20 of 53 CVEs. View all on vendor page → →
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Same vendor: n/a
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Same weakness: CWE-79
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V. Comments for CVE-2021-20323
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