Bug 2268766 (CVE-2024-28757)

Summary:	CVE-2024-28757 expat: XML Entity Expansion
Product:	[Other] Security Response	Reporter:	ybuenos
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	Keywords:	Security
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	expat 2.6.2	Doc Type:	---
Doc Text:	An XML Entity Expansion flaw was found in libexpat. This flaw allows an attacker to cause a denial of service when there is an isolated use of external parsers.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2268767, 2268768
Bug Blocks:	2268769

Description ybuenos 2024-03-10 09:45:10 UTC

libexpat through 2.6.1 allows an XML Entity Expansion attack when there is isolated use of external parsers (created via XML_ExternalEntityParserCreate).

https://github.com/libexpat/libexpat/issues/839
https://github.com/libexpat/libexpat/pull/842

Comment 1 ybuenos 2024-03-10 09:45:41 UTC

Created expat tracking bugs for this issue:

Affects: fedora-all [bug 2268767]

Comment 2 ybuenos 2024-03-10 09:46:40 UTC

Created mingw-expat tracking bugs for this issue:

Affects: fedora-all [bug 2268768]

Comment 8 errata-xmlrpc 2024-03-26 16:42:21 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:1530 https://access.redhat.com/errata/RHSA-2024:1530