CVE-2021-21673
Quick assessment
Affected
Jenkins project Jenkins CAS Plugin
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.
Jenkins是Jenkins开源的一个应用软件。一个开源自动化服务器Jenkins提供了数百个插件来支持构建，部署和自动化任何项目。 Jenkins CAS 存在输入验证错误漏洞，该漏洞源于Jenkins CAS Plugin 1.6.0及更早版本不正确地判断了登录后的重定向URL是合法指向Jenkins的。攻击者可利用该漏洞执行钓鱼攻击。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-21673
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Jenkins CAS Plugin 1.6.0 and earlier improperly determines that a redirect URL after login is legitimately pointing to Jenkins, allowing attackers to perform phishing attacks.
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
Jenkins 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Jenkins是Jenkins开源的一个应用软件。一个开源自动化服务器Jenkins提供了数百个插件来支持构建，部署和自动化任何项目。 Jenkins CAS 存在输入验证错误漏洞，该漏洞源于Jenkins CAS Plugin 1.6.0及更早版本不正确地判断了登录后的重定向URL是合法指向Jenkins的。攻击者可利用该漏洞执行钓鱼攻击。
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 |
|---|---|---|---|---|
| Jenkins project | Jenkins CAS Plugin | unspecified ~ 1.6.0 | - |
|
II. Public POCs for CVE-2021-21673
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2021-21673 (1)
-
https://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2387 x_refsource_CONFIRM
Mailing List Discussions for CVE-2021-21673 (1)
Same Patch Batch · Jenkins project · 2021-06-30 · 7 CVEs total
| CVE-2021-21676 | Jenkins 安全漏洞 | |
| CVE-2021-21675 | Jenkins 跨站请求伪造漏洞 | |
| CVE-2021-21674 | Jenkins 安全漏洞 | |
| CVE-2021-21672 | Jenkins 代码问题漏洞 | |
| CVE-2021-21671 | Jenkins 授权问题漏洞 | |
| CVE-2021-21670 | Jenkins 访问控制错误漏洞 |
IV. Related Vulnerabilities
Same product: Jenkins CAS Plugin
V. Comments for CVE-2021-21673
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