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CVE-2021-32796— Misinterpretation of malicious XML input in xmldom

Quick assessment

Affected
xmldom xmldom
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.

Chris Brody xmldom是 （Chris Brody）开源的一个应用软件。W3C DOM的JavaScript实现，用于Node.js，Rhino和浏览器。 xmldom 0.6.0 及更早版本存在安全漏洞，该漏洞源于无法正确转义特殊字符。这可能会导致某些下游应用程序在 XML 处理期间出现意外的语法更改。

CVSS 6.5 · Medium EPSS 1.36% · P71

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-32796

Vulnerability Information
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Vulnerability Title
Misinterpretation of malicious XML input in xmldom
Source: CVE Program / CVE List V5
Vulnerability Description
xmldom is an open source pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. xmldom versions 0.6.0 and older do not correctly escape special characters when serializing elements removed from their ancestor. This may lead to unexpected syntactic changes during XML processing in some downstream applications. This issue has been resolved in version 0.7.0. As a workaround downstream applications can validate the input and reject the maliciously crafted documents.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对输出编码和转义不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
xmldom 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Chris Brody xmldom是 （Chris Brody）开源的一个应用软件。W3C DOM的JavaScript实现，用于Node.js，Rhino和浏览器。 xmldom 0.6.0 及更早版本存在安全漏洞，该漏洞源于无法正确转义特殊字符。这可能会导致某些下游应用程序在 XML 处理期间出现意外的语法更改。
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
xmldom xmldom < 0.7.0 -

II. Public POCs for CVE-2021-32796

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III. Intelligence Information for CVE-2021-32796

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Patches & Fixes for CVE-2021-32796 (1)

Vendor Advisories for CVE-2021-32796 (1)

Security Blog Posts for CVE-2021-32796 (1)

IV. Related Vulnerabilities

Same product: xmldom
Same vendor: xmldom
Same weakness: CWE-116

V. Comments for CVE-2021-32796

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