CVE-2023-1393
published 2023-03-30CVE-2023-1393: 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…
high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
ITW
Exploited in the wild
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.
Affected
21 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | xorg-server | < xorg-server 2:21.1.7-2 (bookworm) | xorg-server 2:21.1.7-2 (bookworm) |
| debian | xwayland | < xorg-server 2:21.1.7-2 (bookworm) | xorg-server 2:21.1.7-2 (bookworm) |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| msrc | azl3_xorg-x11-server_1.20.10-4_on_azure_linux_3.0 | — | — |
| msrc | azl3_xorg-x11-server_1.20.10-5_on_azure_linux_3.0 | — | — |
| msrc | azl3_xorg-x11-server_1.20.10-6_on_azure_linux_3.0 | — | — |
| msrc | azure_linux_3.0_arm | — | — |
| msrc | azure_linux_3.0_x64 | — | — |
| msrc | cbl2_xorg-x11-server_1.20.10-4_on_cbl_mariner_2.0 | — | — |
| msrc | cbl_mariner_2.0_arm | — | — |
| msrc | cbl_mariner_2.0_x64 | — | — |
| x.org | x_server | < 21.1.8 | 21.1.8 |
| x.org | xorg-server | >= 0 < 2:1.20.11-1+deb11u6 | 2:1.20.11-1+deb11u6 |
| x.org | xorg-server | >= 0 < 2:21.1.7-2 | 2:21.1.7-2 |
| x.org | xorg-server | >= 0 < 2:21.1.7-2 | 2:21.1.7-2 |
| x.org | xorg-server | >= 0 < 2:21.1.7-2 | 2:21.1.7-2 |
| x.org | xwayland | >= 0 < 2:22.1.9-1 | 2:22.1.9-1 |
| x.org | xwayland | >= 0 < 2:22.1.9-1 | 2:22.1.9-1 |
| x.org | xwayland | >= 0 < 2:22.1.9-1 | 2:22.1.9-1 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
cisa9.8CRITICAL