Bug 1788856 (CVE-2019-19956)

Summary:	CVE-2019-19956 libxml2: memory leak in xmlParseBalancedChunkMemoryRecover in parser.c
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	atrivizas, c.david86, csutherl, dking, erik-fedora, gzaronik, igor.raits, jclere, jwon, krathod, ktietz, lgao, mbabacek, mturk, myarboro, ohudlick, pjindal, rjones, tvainio, veillard, weli, yozone
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	libxml2 2.9.10	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-06-22 17:20:30 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:	1788857, 1788858, 1788859, 1793000, 1793001, 1921205, 1921206, 1921207
Bug Blocks:	1788860

Description Marian Rehak 2020-01-08 09:08:35 UTC

xmlParseBalancedChunkMemoryRecover in parser.c in libxml2 before 2.9.10 has a memory leak related to newDoc->oldNs.

Upstream Fix:

https://gitlab.gnome.org/GNOME/libxml2/commit/5a02583c7e683896d84878bd90641d8d9b0d0549

Comment 1 Marian Rehak 2020-01-08 09:09:23 UTC

Created libxml2 tracking bugs for this issue:

Affects: fedora-30 [bug 1788857]


Created mingw-libxml2 tracking bugs for this issue:

Affects: epel-7 [bug 1788859]
Affects: fedora-all [bug 1788858]

Comment 2 Jan Pokorný [poki] 2020-01-08 13:08:13 UTC

Already fixed where libxml2-2.9.10 is present [*]:

Rawhide/F32:
https://bodhi.fedoraproject.org/updates/FEDORA-2019-44d48a72e5

F31:
https://bodhi.fedoraproject.org/updates/FEDORA-2019-92097b71ff

Do we want/need to address this in F30 as well?


see:
https://gitlab.gnome.org/GNOME/libxml2/commits/41a34e1f4ffae2ce401600dbb5fe43f8fe402641

Comment 3 Huzaifa S. Sidhpurwala 2020-01-20 13:25:28 UTC

Upstream bug: https://gitlab.gnome.org/GNOME/libxml2/issues/82

Comment 7 errata-xmlrpc 2020-06-22 12:26:42 UTC

This issue has been addressed in the following products:

  JBoss Core Services on RHEL 6
  JBoss Core Services on RHEL 7

Via RHSA-2020:2644 https://access.redhat.com/errata/RHSA-2020:2644

Comment 8 errata-xmlrpc 2020-06-22 13:08:44 UTC

This issue has been addressed in the following products:

  Red Hat JBoss Core Services

Via RHSA-2020:2646 https://access.redhat.com/errata/RHSA-2020:2646

Comment 9 Product Security DevOps Team 2020-06-22 17:20:30 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2019-19956

Comment 10 errata-xmlrpc 2020-09-29 20:27:01 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:3996 https://access.redhat.com/errata/RHSA-2020:3996

Comment 11 errata-xmlrpc 2020-11-04 01:20:37 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:4479 https://access.redhat.com/errata/RHSA-2020:4479

Comment 13 atrivizas 2023-04-12 12:20:14 UTC

(In reply to errata-xmlrpc from comment #10)
> This issue has been addressed in the following products:
> 
>   Red Hat Enterprise Linux 7
> 
> Via RHSA-2020:3996 https://access.redhat.com/errata/RHSA-2020:3996

Is this fix valid for Red Hat Enterprise Linux 7.6 ?