Bug 1462203 (CVE-2017-7375)

Summary:	CVE-2017-7375 libxml2: Missing validation for external entities in xmlParsePEReference
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	athmanem, bmcclain, c.david86, cfergeau, csutherl, dmoppert, eedri, erik-fedora, fedora-mingw, gzaronik, jclere, lgao, lsurette, mbabacek, mgoldboi, michal.skrivanek, mturk, myarboro, ohudlick, rh-spice-bugs, rjones, sardella, sonu.khan, srevivo, twalsh, veillard, weli, ykaul
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	libxml2 2.9.5	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-27 10:53:10 UTC	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:	1462226, 1462227, 1462228, 1525811, 1695415
Bug Blocks:	1462234, 1658297

Description Adam Mariš 2017-06-16 12:19:18 UTC

Missing validation for external entities was found in xmlParsePEReference that can lead to XXE attack.

Upstream bug (private at the moment):

https://bugzilla.gnome.org/show_bug.cgi?id=780691

Android patch:

https://android.googlesource.com/platform/external/libxml2/+/308396a55280f69ad4112d4f9892f4cbeff042aa

References:

https://source.android.com/security/bulletin/2017-06-01#libraries

Comment 1 Adam Mariš 2017-06-16 12:48:43 UTC

Created libxml2 tracking bugs for this issue:

Affects: fedora-all [bug 1462226]


Created mingw-libxml2 tracking bugs for this issue:

Affects: epel-7 [bug 1462227]
Affects: fedora-all [bug 1462228]

Comment 5 Doran Moppert 2019-01-21 00:45:14 UTC

Upstream patch:

https://gitlab.gnome.org/GNOME/libxml2/commit/90ccb582

Comment 7 Sonu Khan 2020-01-13 10:45:04 UTC

Is there any steps to reproduce this vulnerability or to test the upstream patch?