CVE-2021-21366

Published: 12 March 2021

xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. xmldom versions 0.4.0 and older do not correctly preserve system identifiers, FPIs or namespaces when repeatedly parsing and serializing maliciously crafted documents. This may lead to unexpected syntactic changes during XML processing in some downstream applications. This is fixed in version 0.5.0. As a workaround downstream applications can validate the input and reject the maliciously crafted documents.

Priority

Cvss 3 Severity Score

4.3

Score breakdown

Status

Package	Release	Status
node-xmldom Launchpad, Ubuntu, Debian	jammy	Not vulnerable (0.7.5-1)
	kinetic	Not vulnerable (0.7.5-1)
	lunar	Not vulnerable (0.7.5-1)
	bionic	Does not exist
	focal	Released (0.1.27+ds-1+deb10u2build0.20.04.1)
	groovy	Ignored (end of life)
	trusty	Does not exist
	upstream	Released (0.5.0)
	xenial	Does not exist
	hirsute	Ignored (end of life)
	impish	Ignored (end of life)

Severity score breakdown

Parameter	Value
Base score	4.3
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	None
Integrity impact	Low
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

References

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