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CVE-2024-32877— Reflected Cross-site Scripting in yiisoft/yii2 Debug mode

Quick assessment

Affected
yiisoft yii2
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.

Yii是YII团队的开发的一套基于组件、用于开发大型Web应用的高性能PHP框架。 Yii 2 2.0.49.3版本存在安全漏洞，该漏洞源于允许攻击者通过特制链接在受害者网站的安全上下文中执行任意 JavaScript 代码，导致 cookie被盗、内容替换或完全接管用户帐户。

CVSS 4.2 · Medium EPSS 0.35% · P26
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I. Basic Information for CVE-2024-32877

Vulnerability Information
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Vulnerability Title
Reflected Cross-site Scripting in yiisoft/yii2 Debug mode
Source: CVE Program / CVE List V5
Vulnerability Description
Yii 2 is a PHP application framework. During internal penetration testing of a product based on Yii2, users discovered a Cross-site Scripting (XSS) vulnerability within the framework itself. This issue is relevant for the latest version of Yii2 (2.0.49.3). This issue lies in the mechanism for displaying function argument values in the stack trace. The vulnerability manifests when an argument's value exceeds 32 characters. For convenience, argument values exceeding this limit are truncated and displayed with an added "...". The full argument value becomes visible when hovering over it with the mouse, as it is displayed in the title attribute of a span tag. However, the use of a double quote (") allows an attacker to break out of the title attribute's value context and inject their own attributes into the span tag, including malicious JavaScript code through event handlers such as onmousemove. This vulnerability allows an attacker to execute arbitrary JavaScript code in the security context of the victim's site via a specially crafted link. This could lead to the theft of cookies (including httpOnly cookies, which are accessible on the page), content substitution, or complete takeover of user accounts. This issue has been addressed in version 2.0.50. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/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
Yii 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Yii是YII团队的开发的一套基于组件、用于开发大型Web应用的高性能PHP框架。 Yii 2 2.0.49.3版本存在安全漏洞，该漏洞源于允许攻击者通过特制链接在受害者网站的安全上下文中执行任意 JavaScript 代码，导致 cookie被盗、内容替换或完全接管用户帐户。
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
yiisoft yii2 = 2.0.49.3 -

II. Public POCs for CVE-2024-32877

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III. Intelligence Information for CVE-2024-32877

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Patches & Fixes for CVE-2024-32877 (1)

Vendor Advisories for CVE-2024-32877 (1)

IV. Related Vulnerabilities

Same product: yii2
Same vendor: yiisoft
Same weakness: CWE-79

V. Comments for CVE-2024-32877

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