7 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.1 High
AI Score
Confidence
Low
0.0004 Low
EPSS
Percentile
16.1%
Issue Overview:
A use-after-free flaw was found in xorg-x11-server-Xvfb. This issue occurs in Xvfb with a very specific and legacy configuration (a multi-screen setup with multiple protocol screens, also known as Zaphod mode). If the pointer is warped from a screen 1 to a screen 0, a use-after-free issue may be triggered during shutdown or reset of the Xvfb server, allowing for possible escalation of privileges or denial of service. (CVE-2023-5574)
Affected Packages:
xorg-x11-server
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update xorg-x11-server to update your system.
New Packages:
aarch64:
xorg-x11-server-common-1.20.4-22.amzn2.0.2.aarch64
xorg-x11-server-Xorg-1.20.4-22.amzn2.0.2.aarch64
xorg-x11-server-Xnest-1.20.4-22.amzn2.0.2.aarch64
xorg-x11-server-Xdmx-1.20.4-22.amzn2.0.2.aarch64
xorg-x11-server-Xvfb-1.20.4-22.amzn2.0.2.aarch64
xorg-x11-server-Xephyr-1.20.4-22.amzn2.0.2.aarch64
xorg-x11-server-Xwayland-1.20.4-22.amzn2.0.2.aarch64
xorg-x11-server-devel-1.20.4-22.amzn2.0.2.aarch64
xorg-x11-server-debuginfo-1.20.4-22.amzn2.0.2.aarch64
i686:
xorg-x11-server-common-1.20.4-22.amzn2.0.2.i686
xorg-x11-server-Xorg-1.20.4-22.amzn2.0.2.i686
xorg-x11-server-Xnest-1.20.4-22.amzn2.0.2.i686
xorg-x11-server-Xdmx-1.20.4-22.amzn2.0.2.i686
xorg-x11-server-Xvfb-1.20.4-22.amzn2.0.2.i686
xorg-x11-server-Xephyr-1.20.4-22.amzn2.0.2.i686
xorg-x11-server-Xwayland-1.20.4-22.amzn2.0.2.i686
xorg-x11-server-devel-1.20.4-22.amzn2.0.2.i686
xorg-x11-server-debuginfo-1.20.4-22.amzn2.0.2.i686
noarch:
xorg-x11-server-source-1.20.4-22.amzn2.0.2.noarch
src:
xorg-x11-server-1.20.4-22.amzn2.0.2.src
x86_64:
xorg-x11-server-common-1.20.4-22.amzn2.0.2.x86_64
xorg-x11-server-Xorg-1.20.4-22.amzn2.0.2.x86_64
xorg-x11-server-Xnest-1.20.4-22.amzn2.0.2.x86_64
xorg-x11-server-Xdmx-1.20.4-22.amzn2.0.2.x86_64
xorg-x11-server-Xvfb-1.20.4-22.amzn2.0.2.x86_64
xorg-x11-server-Xephyr-1.20.4-22.amzn2.0.2.x86_64
xorg-x11-server-Xwayland-1.20.4-22.amzn2.0.2.x86_64
xorg-x11-server-devel-1.20.4-22.amzn2.0.2.x86_64
xorg-x11-server-debuginfo-1.20.4-22.amzn2.0.2.x86_64
Red Hat: CVE-2023-5574
Mitre: CVE-2023-5574
7 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.1 High
AI Score
Confidence
Low
0.0004 Low
EPSS
Percentile
16.1%