Bug 1869144 (CVE-2020-14362)

Summary: CVE-2020-14362 xorg-x11-server: XRecordRegisterClients integer underflow privilege escalation vulnerability
Product: [Other] Security Response Reporter: Huzaifa S. Sidhpurwala <huzaifas>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: ajax, bskeggs, caillon+fedoraproject, jglisse, john.j5live, mvanderw, ofourdan, rhughes, rstrode, sandmann, security-response-team, xgl-maint
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
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.
Story Points: ---
Clone Of: Environment:
Last Closed: 2020-11-04 20:21:26 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: 1872406, 1872407, 1872408, 1872409, 1872410, 1910713    
Bug Blocks: 1862265    

Description Huzaifa S. Sidhpurwala 2020-08-17 04:49:20 UTC
A flaw was found in X.Org Server. An Integer underflow leading to heap-buffer overflow was found in XRecordRegisterClients may lead to a privilege escalation vulnerability.

Comment 1 Huzaifa S. Sidhpurwala 2020-08-17 04:49:24 UTC
Acknowledgments:

Name: Jan-Niklas Sohn (Trend Micro Zero Day Initiative)

Comment 4 Huzaifa S. Sidhpurwala 2020-08-25 16:15:11 UTC
External References:

https://lists.x.org/archives/xorg-announce/2020-August/003058.html

Comment 5 Huzaifa S. Sidhpurwala 2020-08-25 16:19:10 UTC
Created xorg-x11-server tracking bugs for this issue:

Affects: fedora-all [bug 1872410]

Comment 7 Huzaifa S. Sidhpurwala 2020-08-26 08:57:15 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 17:27:17 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 20:21:26 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-2020-14362

Comment 14 errata-xmlrpc 2020-11-05 09:51:16 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 15:12:00 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