Bug 1872473 (CVE-2020-14363) - CVE-2020-14363 libX11: integer overflow leads to double free in locale handling
Summary: CVE-2020-14363 libX11: integer overflow leads to double free in locale handling
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2020-14363
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
: 1872572 (view as bug list)
Depends On: 1872474 1873920 1873921 1873922 1873923 1918159
Blocks: 1862265
TreeView+ depends on / blocked
 
Reported: 2020-08-25 20:54 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-06-04 15:35 UTC (History)
13 users (show)

Fixed In Version: libX11 1.6.12
Doc Type: If docs needed, set a value
Doc Text:
An integer overflow vulnerability leading to a double-free was found in libX11. This flaw allows a local privileged attacker to cause an application compiled with libX11 to crash, or in some cases, result in arbitrary code execution. The highest threat from this flaw is to confidentiality, integrity as well as system availability.
Clone Of:
Environment:
Last Closed: 2020-11-04 20:21:29 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2020:4955 0 None None None 2020-11-05 12:08:28 UTC
Red Hat Product Errata RHBA-2020:4956 0 None None None 2020-11-05 14:02:12 UTC
Red Hat Product Errata RHBA-2020:4958 0 None None None 2020-11-05 14:29:11 UTC
Red Hat Product Errata RHBA-2020:4966 0 None None None 2020-11-05 20:59:04 UTC
Red Hat Product Errata RHBA-2020:4970 0 None None None 2020-11-09 01:01:17 UTC
Red Hat Product Errata RHBA-2020:4982 0 None None None 2020-11-09 14:35:47 UTC
Red Hat Product Errata RHBA-2020:5155 0 None None None 2020-11-18 21:14:14 UTC
Red Hat Product Errata RHBA-2020:5169 0 None None None 2020-11-23 12:06:47 UTC
Red Hat Product Errata RHBA-2020:5211 0 None None None 2020-11-24 12:32:24 UTC
Red Hat Product Errata RHBA-2020:5336 0 None None None 2020-12-03 15:13:39 UTC
Red Hat Product Errata RHSA-2020:4908 0 None None None 2020-11-04 14:07:56 UTC
Red Hat Product Errata RHSA-2020:4946 0 None None None 2020-11-05 09:42:02 UTC

Description Guilherme de Almeida Suckevicz 2020-08-25 20:54:47 UTC 
There is an integer overflow and a double free vulnerability in the way LibX11 handles locales. The integer overflow is a necessary precursor to the double free.
Comment 1 Guilherme de Almeida Suckevicz 2020-08-25 20:55:06 UTC 
Created libX11 tracking bugs for this issue:

Affects: fedora-all [bug 1872474]
Comment 2 Tomas Hoger 2020-08-26 07:30:07 UTC 
Upstream advisory:

https://lists.x.org/archives/xorg-announce/2020-August/003056.html

Upstream patch:

https://gitlab.freedesktop.org/xorg/lib/libx11/-/commit/acdaaadcb3d85c61fd43669fc5dddf0f8c3f911d
Comment 3 Doran Moppert 2020-08-27 00:46:11 UTC 
*** Bug 1872572 has been marked as a duplicate of this bug. ***
Comment 4 Huzaifa S. Sidhpurwala 2020-08-31 03:27:22 UTC 
External References:

https://lists.x.org/archives/xorg-announce/2020-August/003056.html
Comment 7 RaTasha Tillery-Smith 2020-09-01 14:32:47 UTC 
Statement:

Xorg server does not run with root privileges in Red Hat Enterprise Linux 8. Therefore this flaw has been rated as having a moderate impact for Red Hat Enterprise Linux 8.
Comment 16 errata-xmlrpc 2020-11-04 14:08:10 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:4908 https://access.redhat.com/errata/RHSA-2020:4908
Comment 17 Product Security DevOps Team 2020-11-04 20:21:29 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-2020-14363
Comment 20 errata-xmlrpc 2020-11-05 09:42:16 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2020:4946 https://access.redhat.com/errata/RHSA-2020:4946
Comment 26 errata-xmlrpc 2021-05-18 15:12:02 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:1804 https://access.redhat.com/errata/RHSA-2021:1804
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