Bug 1811721 (CVE-2020-10018)

Summary:	CVE-2020-10018 webkitgtk: Use-after-free issue in accessibility/AXObjectCache.cpp
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	gnome-sig, mcatanza, mcatanzaro+wrong-account-do-not-cc, tpopela
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	webkitgtk 2.28.0	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-09-29 22:00:05 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:	1811722, 1818658, 1818659, 1818660
Bug Blocks:	1811723

Description Pedro Sampaio 2020-03-09 15:39:24 UTC

accessibility/AXObjectCache.cpp in WebKit, as used in WebKitGTK through 2.26.4 and WPE WebKit through 2.26.4, allows a denial of service (application crash) because maintenance of the m_deferredFocusedNodeChange data structure mishandles removal.

Upstream patch:

https://trac.webkit.org/changeset/257292/webkit

Comment 1 Pedro Sampaio 2020-03-09 15:40:24 UTC

Created webkit2gtk3 tracking bugs for this issue:

Affects: fedora-all [bug 1811722]

Comment 2 Michael Catanzaro 2020-03-12 14:08:58 UTC

Note this was misclassified as denial of service, but it's actually a use after free, which we classify as remote code execution.

Comment 7 errata-xmlrpc 2020-09-29 20:45:58 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:4035 https://access.redhat.com/errata/RHSA-2020:4035

Comment 8 Product Security DevOps Team 2020-09-29 22:00:05 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-2020-10018

Comment 9 errata-xmlrpc 2020-11-04 01:04:58 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:4451 https://access.redhat.com/errata/RHSA-2020:4451