High severity · published Mar 30, 2023
CVE-2023-1393
A flaw was found in X.Org Server Overlay Window
7.8
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
36; 37; 38 · source: NVD
XS
X Server · X.org
before 21.1.8 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-1393
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-1393
Patch
https://gitlab.freedesktop.org/xorg/xserver/-/commit/26ef545b3502f61ca722a7a3373507e88ef64110
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BPNQYHUI63DB5FHK6EOI3Z4C6YQZGZKI/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H3EVO3OQV6T4BSABWZ2TU3PY5TJTEQZ2/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MEHSYYFGBN3G4RS2HJXKQ5NBMOAZ5F2F/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NOYATGGPMT3COC7ELAJW5TG2PVS3AFR2/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PSAAGI5V77FQXIT5PP4URP6BYQVCK5U5/
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