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CVE-2021-21338— Open Redirection in Login Handling

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 CMS 存在输入验证错误漏洞，该漏洞允许攻击者重定向到任意内容并进行网络钓鱼攻击。以下产品及版本受到影响：6.2.0-6.2.56, 7.0.0-7.6.50, 8.0.0-8.7.39, 9.0.0-9.5.24, 10.0.0-10.4.13, 11.0.0-11.1.0。

CVSS 4.7 · Medium EPSS 1.10% · P65
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I. Basic Information for CVE-2021-21338

Vulnerability Information
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Vulnerability Title
Open Redirection in Login Handling
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 it has been discovered that Login Handling is susceptible to open redirection which allows attackers redirecting to arbitrary content, and conducting phishing attacks. No authentication is required in order to exploit this vulnerability. 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:L/PR:N/UI:R/S:C/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: CVE Program / CVE List V5
Vulnerability Title
TYPO3 输入验证错误漏洞
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 CMS 存在输入验证错误漏洞，该漏洞允许攻击者重定向到任意内容并进行网络钓鱼攻击。以下产品及版本受到影响：6.2.0-6.2.56, 7.0.0-7.6.50, 8.0.0-8.7.39, 9.0.0-9.5.24, 10.0.0-10.4.13, 11.0.0-11.1.0。
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-2021-21338

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III. Intelligence Information for CVE-2021-21338

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Vendor Advisories for CVE-2021-21338 (1)

Other References for CVE-2021-21338 (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-2021-21339 5.9 MEDIUM Cleartext storage of session identifier
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)

IV. Related Vulnerabilities

Same product: TYPO3.CMS
Same vendor: TYPO3
Same weakness: CWE-601

V. Comments for CVE-2021-21338

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