CVE-2023-0494
Published: 7 February 2023
A vulnerability was found in X.Org. This issue occurs due to a dangling pointer in DeepCopyPointerClasses that can be exploited by ProcXkbSetDeviceInfo() and ProcXkbGetDeviceInfo() to read and write into freed memory. This can lead to local privilege elevation on systems where the X server runs privileged and remote code execution for ssh X forwarding sessions.
Notes
| Author | Note |
|---|---|
| mdeslaur | xorg server is actually the xorg-server package the xorg package only contains docs xwayland package contains parts of xorg-server |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
xorg-server Launchpad, Ubuntu, Debian |
bionic |
Released
(2:1.19.6-1ubuntu4.14)
|
| focal |
Released
(2:1.20.13-1ubuntu1~20.04.6)
|
|
| jammy |
Released
(2:21.1.3-2ubuntu2.7)
|
|
| kinetic |
Released
(2:21.1.4-2ubuntu1.5)
|
|
| upstream |
Needs triage
|
|
| trusty |
Released
(2:1.15.1-0ubuntu2.11+esm7)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| xenial |
Released
(2:1.18.4-0ubuntu0.12+esm5)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| lunar |
Released
(2:21.1.7-1ubuntu1)
|
|
|
Patches: upstream: https://gitlab.freedesktop.org/xorg/xserver/-/commit/0ba6d8c37071131a49790243cdac55392ecf71ec |
||
|
xorg-server-hwe-16.04 Launchpad, Ubuntu, Debian |
xenial |
Released
(2:1.19.6-1ubuntu4.1~16.04.6+esm4)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
| trusty |
Does not exist
|
|
| bionic |
Does not exist
|
|
| focal |
Does not exist
|
|
| jammy |
Does not exist
|
|
| kinetic |
Does not exist
|
|
| upstream |
Needs triage
|
|
|
xorg-server-hwe-18.04 Launchpad, Ubuntu, Debian |
bionic |
Released
(2:1.20.8-2ubuntu2.2~18.04.10)
|
| kinetic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
| focal |
Does not exist
|
|
| jammy |
Does not exist
|
|
|
xorg-server-lts-utopic Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| focal |
Does not exist
|
|
| jammy |
Does not exist
|
|
| kinetic |
Does not exist
|
|
| trusty |
Ignored
(end of standard support)
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
|
xorg-server-lts-vivid Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| focal |
Does not exist
|
|
| jammy |
Does not exist
|
|
| kinetic |
Does not exist
|
|
| trusty |
Ignored
(end of standard support)
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
|
xorg-server-lts-wily Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| focal |
Does not exist
|
|
| jammy |
Does not exist
|
|
| kinetic |
Does not exist
|
|
| trusty |
Ignored
(end of standard support)
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
|
xorg-server-lts-xenial Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| focal |
Does not exist
|
|
| jammy |
Does not exist
|
|
| kinetic |
Does not exist
|
|
| trusty |
Ignored
(end of standard support)
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
|
xwayland Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| focal |
Does not exist
|
|
| jammy |
Released
(2:22.1.1-1ubuntu0.5)
|
|
| kinetic |
Released
(2:22.1.3-2ubuntu0.3)
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
| lunar |
Released
(2:22.1.8-1)
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |