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CVE-2021-32768— Cross-Site Scripting via Rich-Text Content

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存在跨站脚本漏洞，该漏洞源于如果受影响的版本不能正确地解析、清理和编码恶意富文本内容，那么网站前端的内容呈现过程很容易受到跨站点脚本的攻击。

CVSS 6.1 · Medium EPSS 0.73% · P54
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I. Basic Information for CVE-2021-32768

Vulnerability Information
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Vulnerability Title
Cross-Site Scripting via Rich-Text Content
Source: CVE Program / CVE List V5
Vulnerability Description
TYPO3 is an open source PHP based web content management system released under the GNU GPL. In affected versions failing to properly parse, sanitize and encode malicious rich-text content, the content rendering process in the website frontend is vulnerable to cross-site scripting. Corresponding rendering instructions via TypoScript functionality HTMLparser does not consider all potentially malicious HTML tag & attribute combinations per default. In default scenarios, a valid backend user account is needed to exploit this vulnerability. In case custom plugins used in the website frontend accept and reflect rich-text content submitted by users, no authentication is required. Update to TYPO3 versions 7.6.53 ELTS, 8.7.42 ELTS, 9.5.29, 10.4.19, 11.3.2 that fix the problem described.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
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存在跨站脚本漏洞，该漏洞源于如果受影响的版本不能正确地解析、清理和编码恶意富文本内容，那么网站前端的内容呈现过程很容易受到跨站点脚本的攻击。
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
TYPO3 TYPO3.CMS >= 7.0.0, < 7.6.53 -

II. Public POCs for CVE-2021-32768

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III. Intelligence Information for CVE-2021-32768

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Vendor Advisories for CVE-2021-32768 (1)

Other References for CVE-2021-32768 (1)

IV. Related Vulnerabilities

Same product: TYPO3.CMS
Same vendor: TYPO3
Same weakness: CWE-79

V. Comments for CVE-2021-32768

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