Bug 1869142 (CVE-2020-14361) - CVE-2020-14361 xorg-x11-server: XkbSelectEvents integer underflow privilege escalation vulnerability
Summary: CVE-2020-14361 xorg-x11-server: XkbSelectEvents integer underflow privilege e...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2020-14361
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:
Depends On: 1872399 1872400 1872401 1872402 1872403 1910714
Blocks: 1862265
TreeView+ depends on / blocked
 
Reported: 2020-08-17 04:39 UTC by Huzaifa S. Sidhpurwala
Modified: 2022-10-02 21:50 UTC (History)
11 users (show)

Fixed In Version: xorg-x11-server 1.20.9
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in X.Org Server. An Integer underflow leading to heap-buffer overflow may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Clone Of:
Environment:
Last Closed: 2020-11-04 20:21:23 UTC
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:4910 0 None None None 2020-11-04 17:27:17 UTC
Red Hat Product Errata RHSA-2020:4953 0 None None None 2020-11-05 09:51:18 UTC

Description Huzaifa S. Sidhpurwala 2020-08-17 04:39:51 UTC 
A flaw was found in X.Org Server. An Integer underflow leading to heap-buffer overflow was found in XkbSelectEvent may lead to a privilege escalation vulnerability.
Comment 1 Huzaifa S. Sidhpurwala 2020-08-17 04:39:55 UTC 
Acknowledgments:

Name: Jan-Niklas Sohn (Trend Micro Zero Day Initiative)
Comment 3 Huzaifa S. Sidhpurwala 2020-08-25 16:12:12 UTC 
Upstream commit: https://gitlab.freedesktop.org/xorg/xserver/-/commit/144849ea27230962227e62a943b399e2ab304787
Comment 4 Huzaifa S. Sidhpurwala 2020-08-25 16:12:20 UTC 
External References:

https://lists.x.org/archives/xorg-announce/2020-August/003058.html
Comment 5 Huzaifa S. Sidhpurwala 2020-08-25 16:14:43 UTC 
Created xorg-x11-server tracking bugs for this issue:

Affects: fedora-all [bug 1872403]
Comment 7 Huzaifa S. Sidhpurwala 2020-08-26 08:56:58 UTC 
Statement:

Xorg server does not run with root  privileges in Red Hat Enterprise Linux 8, therefore this flaw has been rated as having moderate impact for Red Hat Enterprise linux 8.
Comment 11 errata-xmlrpc 2020-11-04 17:27:14 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:4910 https://access.redhat.com/errata/RHSA-2020:4910
Comment 12 Product Security DevOps Team 2020-11-04 20:21:23 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-2020-14361
Comment 14 errata-xmlrpc 2020-11-05 09:51:12 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2020:4953 https://access.redhat.com/errata/RHSA-2020:4953
Comment 16 errata-xmlrpc 2021-05-18 15:11:57 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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