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CVE-2020-5421— RFD Protection Bypass via jsessionid

Quick assessment

Affected
Spring by VMware Spring Framework
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.

Vmware Spring Framework是美国威睿（Vmware）公司的一套开源的Java、JavaEE应用程序框架。该框架可帮助开发人员构建高质量的应用。 VMware Tanzu Spring Framework存在安全漏洞，该漏洞源于jsessionid路径参数绕过，以下产品及版本受到影响：5.2.0 - 5.2.8、5.1.0至5.1.17、5.0.0至5.0.18、4.3.0至4.3.28以及更早的不受支持的版本。

AI Predicted 6.1 Difficulty: Moderate EPSS 10.74% · P96
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I. Basic Information for CVE-2020-5421

Vulnerability Information
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Vulnerability Title
RFD Protection Bypass via jsessionid
Source: CVE Program / CVE List V5
Vulnerability Description
In Spring Framework versions 5.2.0 - 5.2.8, 5.1.0 - 5.1.17, 5.0.0 - 5.0.18, 4.3.0 - 4.3.28, and older unsupported versions, the protections against RFD attacks from CVE-2015-5211 may be bypassed depending on the browser used through the use of a jsessionid path parameter.
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 Spring Framework 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Vmware Spring Framework是美国威睿（Vmware）公司的一套开源的Java、JavaEE应用程序框架。该框架可帮助开发人员构建高质量的应用。 VMware Tanzu Spring Framework存在安全漏洞，该漏洞源于jsessionid路径参数绕过，以下产品及版本受到影响：5.2.0 - 5.2.8、5.1.0至5.1.17、5.0.0至5.0.18、4.3.0至4.3.28以及更早的不受支持的版本。
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
Spring by VMware Spring Framework 4.3 ~ 4.3.29 -

II. Public POCs for CVE-2020-5421

# POC Description Source Link Shenlong Link
1 Spring 安全漏洞 CVE-2020-5421复现 https://github.com/pandaMingx/CVE-2020-5421 POC Details
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III. Intelligence Information for CVE-2020-5421

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Vendor Advisories for CVE-2020-5421 (7)

Mailing List Discussions for CVE-2020-5421 (16)

Other References for CVE-2020-5421 (1)

IV. Related Vulnerabilities

Same product: Spring Framework
Same vendor: Spring by VMware

V. Comments for CVE-2020-5421

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