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CVE-2021-21339— Cleartext storage of session identifier

Quick assessment

Affected
TYPO3 TYPO3.CMS
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.

TYPO3是瑞士TYPO3（Typo3）协会的一套免费开源的内容管理系统(框架)(CMS/CMF)。 TYPO3 Core 存在跨站脚本漏洞，该漏洞源于内容预览渲染器组件中对用户提供的数据的处理不足。

CVSS 5.9 · Medium EPSS 0.92% · P60

Possible ATT&CK Techniques 1 AI

T1552.005 · Cloud Instance Metadata API
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I. Basic Information for CVE-2021-21339

Vulnerability Information
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Vulnerability Title
Cleartext storage of session identifier
Source: CVE Program / CVE List V5
Vulnerability Description
TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 6.2.57, 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1 user session identifiers were stored in cleartext - without processing of additional cryptographic hashing algorithms. This vulnerability cannot be exploited directly and occurs in combination with a chained attack - like for instance SQL injection in any other component of the system. This is fixed in versions 6.2.57, 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
敏感数据的明文存储
Source: CVE Program / CVE List V5
Vulnerability Title
TYPO3 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TYPO3是瑞士TYPO3（Typo3）协会的一套免费开源的内容管理系统(框架)(CMS/CMF)。 TYPO3 Core 存在跨站脚本漏洞，该漏洞源于内容预览渲染器组件中对用户提供的数据的处理不足。
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
TYPO3 TYPO3.CMS >= 6.2.0, <= 6.2.56 -

II. Public POCs for CVE-2021-21339

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III. Intelligence Information for CVE-2021-21339

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Vendor Advisories for CVE-2021-21339 (1)

Other References for CVE-2021-21339 (2)

Same Patch Batch · TYPO3 · 2021-03-23 · 8 CVEs total

CVE-2021-21355 8.6 HIGH Unrestricted File Upload in Form Framework
CVE-2021-21357 8.3 HIGH Broken Access Control in Form Framework
CVE-2021-21359 5.9 MEDIUM Denial of Service in Page Error Handling
CVE-2021-21358 5.4 MEDIUM Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in ty
CVE-2021-21340 5.4 MEDIUM Cross-Site Scripting in Content Preview
CVE-2021-21370 5.4 MEDIUM Cross-Site Scripting in Content Preview (CType menu)
CVE-2021-21338 4.7 MEDIUM Open Redirection in Login Handling

IV. Related Vulnerabilities

Same product: TYPO3.CMS
Same vendor: TYPO3
Same weakness: CWE-312

V. Comments for CVE-2021-21339

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