CVE-2021-21688
Quick assessment
Affected
Jenkins project Jenkins
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 存在安全漏洞，该漏洞源于Jenkins 2.318 及更早版本、LTS 2.303.2 及更早版本中的代理到控制器安全检查 FilePath#reading(FileVisitor) 不拒绝任何操作。攻击者可利用该漏洞使用某些操作（创建档案、FilePath#copyRecursiveTo）进行无限制的读取访问。
Possible ATT&CK Techniques 2 AI
T1530 · Data from Cloud Storage T1083 · File and Directory Discovery
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I. Basic Information for CVE-2021-21688
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The agent-to-controller security check FilePath#reading(FileVisitor) in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier does not reject any operations, allowing users to have unrestricted read access using certain operations (creating archives, FilePath#copyRecursiveTo).
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 安全漏洞
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 存在安全漏洞，该漏洞源于Jenkins 2.318 及更早版本、LTS 2.303.2 及更早版本中的代理到控制器安全检查 FilePath#reading(FileVisitor) 不拒绝任何操作。攻击者可利用该漏洞使用某些操作（创建档案、FilePath#copyRecursiveTo）进行无限制的读取访问。
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 | unspecified ~ 2.318 | - |
|
II. Public POCs for CVE-2021-21688
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2021-21688 (1)
-
https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455 x_refsource_CONFIRM
Same Patch Batch · Jenkins project · 2021-11-04 · 14 CVEs total
| CVE-2021-21693 | Jenkins 授权问题漏洞 | |
| CVE-2021-21685 | Jenkins 访问控制错误漏洞 | |
| CVE-2021-21686 | Jenkins 后置链接漏洞 | |
| CVE-2021-21687 | Jenkins 安全漏洞 | |
| CVE-2021-21689 | Jenkins 安全漏洞 | |
| CVE-2021-21690 | Jenkins 安全漏洞 | |
| CVE-2021-21691 | Jenkins 安全漏洞 | |
| CVE-2021-21692 | Jenkins 安全漏洞 | |
| CVE-2021-21694 | Jenkins 安全漏洞 | |
| CVE-2021-21695 | Jenkins 后置链接漏洞 | |
| CVE-2021-21696 | Jenkins 安全漏洞 | |
| CVE-2021-21697 | Jenkins 安全漏洞 | |
| CVE-2021-21698 | Jenkins 路径遍历漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2021-21688
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