CVE-2023-28484

Published: 12 April 2023

In libxml2 before 2.10.4, parsing of certain invalid XSD schemas can lead to a NULL pointer dereference and subsequently a segfault. This occurs in xmlSchemaFixupComplexType in xmlschemas.c.

Priority

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package	Release	Status
libxml2 Launchpad, Ubuntu, Debian	bionic	Released (2.9.4+dfsg1-6.1ubuntu1.9)
	focal	Released (2.9.10+dfsg-5ubuntu0.20.04.6)
	jammy	Released (2.9.13+dfsg-1ubuntu0.3)
	kinetic	Released (2.9.14+dfsg-1ubuntu0.2)
	lunar	Released (2.9.14+dfsg-1.1ubuntu0.1)
	trusty	Released (2.9.1+dfsg1-3ubuntu4.13+esm5) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Needs triage
	xenial	Released (2.9.3+dfsg1-1ubuntu0.7+esm5) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)

Severity score breakdown

Parameter	Value
Base score	6.5
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

Bugs

https://bugzilla.redhat.com/show_bug.cgi?id=2185994

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