CVE-2021-32796

Misinterpretation of malicious XML input in xmldom

Severity Score

5.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

xmldom es un módulo DOMParser y XMLSerializer de código abierto basado en el estándar W3C (XML DOM Level 2 Core). Las versiones 0.6.0 y anteriores de xmldom no escapan correctamente los caracteres especiales al serializar elementos eliminados de su ancestro. Esto puede provocar cambios sintácticos inesperados durante el procesamiento de XML en algunas aplicaciones posteriores. Este problema se ha resuelto en la versión 0.7.0. Como solución, las aplicaciones posteriores pueden validar la entrada y rechazar los documentos maliciosos

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-05-12 CVE Reserved
2021-07-27 CVE Published
2024-04-11 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-91: XML Injection (aka Blind XPath Injection)
CWE-116: Improper Encoding or Escaping of Output

CAPEC

References (3)

URL	Tag	Source
https://github.com/xmldom/xmldom/security/advisories/GHSA-5fg8-2547-mr8q	Third Party Advisory
https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities	Not Applicable

URL	Date	SRC

URL	Date	SRC
https://github.com/xmldom/xmldom/commit/7b4b743917a892d407356e055b296dcd6d107e8b	2022-04-25

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Xmldom Project Search vendor "Xmldom Project"		Xmldom Search vendor "Xmldom Project" for product "Xmldom"				< 0.7.0 Search vendor "Xmldom Project" for product "Xmldom" and version " < 0.7.0"		node.js		Affected