CVE-2023-1393
Published: 29 March 2023
A flaw was found in X.Org Server Overlay Window. A Use-After-Free may lead to local privilege escalation. If a client explicitly destroys the compositor overlay window (aka COW), the Xserver would leave a dangling pointer to that window in the CompScreen structure, which will trigger a use-after-free later.
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 This is ZDI-CAN-19866 |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
xorg-server Launchpad, Ubuntu, Debian |
bionic |
Released
(2:1.19.6-1ubuntu4.15)
|
| focal |
Released
(2:1.20.13-1ubuntu1~20.04.8)
|
|
| jammy |
Released
(2:21.1.3-2ubuntu2.9)
|
|
| kinetic |
Released
(2:21.1.4-2ubuntu1.7)
|
|
| lunar |
Released
(2:21.1.7-1ubuntu3)
|
|
| trusty |
Needs triage
|
|
| upstream |
Released
(21.1.8)
|
|
| xenial |
Needs triage
|
|
|
Patches: upstream: https://gitlab.freedesktop.org/xorg/xserver/-/commit/26ef545b3 |
||
|
xorg-server-hwe-16.04 Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| focal |
Does not exist
|
|
| jammy |
Does not exist
|
|
| kinetic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Needs triage
|
|
|
xorg-server-hwe-18.04 Launchpad, Ubuntu, Debian |
bionic |
Released
(2:1.20.8-2ubuntu2.2~18.04.11)
|
| focal |
Does not exist
|
|
| jammy |
Does not exist
|
|
| kinetic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
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
(out 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
(out 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
(out 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
(out of standard support)
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
|
xwayland Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| focal |
Does not exist
|
|
| jammy |
Released
(2:22.1.1-1ubuntu0.6)
|
|
| kinetic |
Released
(2:22.1.3-2ubuntu0.4)
|
|
| lunar |
Released
(2:22.1.8-1ubuntu1)
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
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 |