Description
A flaw was found in the way xserver memory was not properly initialized. This could leak parts of server memory to the X client. In cases where Xorg server runs with elevated privileges, this could result in possible ASLR bypass. Xorg-server before version 1.20.9 is vulnerable.
References (10)
Core 10
Core References
Mailing List, Patch, Vendor Advisory x_refsource_misc
https://lists.x.org/archives/xorg-announce/2020-July/003051.html
Mailing List, Third Party Advisory x_refsource_misc
https://www.openwall.com/lists/oss-security/2020/07/31/2
Issue Tracking, Third Party Advisory x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14347
Broken Link vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00066.html
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2020/08/msg00057.html
Broken Link vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00075.html
Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2020/dsa-4758
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/4488-1/
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/4488-2/
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/202012-01
Scores
CVSS v3
5.5
EPSS
0.0039
EPSS Percentile
30.4%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Details
CWE
CWE-665
Status
published
Products (7)
canonical/ubuntu_linux
14.04
canonical/ubuntu_linux
16.04
canonical/ubuntu_linux
18.04
canonical/ubuntu_linux
20.04
debian/debian_linux
9.0
debian/debian_linux
10.0
x.org/x_server
< 1.20.9
Published
Aug 05, 2020
Tracked Since
Feb 18, 2026