CVE-2024-0229
HighCVSS 7.8Exploitation Probability (EPSS)
Elevated risk69th percentile - higher than 69% of all known CVEs
Summary
An out-of-bounds memory access flaw was found in the X.Org server. It can be triggered when a device frozen by a sync grab is reattached to a different master device, potentially leading to an application crash, local privilege escalation, or remote code execution in SSH X11 forwarding environments.
Risk Assessment
Privilege escalation or remote code execution is possible, potentially leading to compromise of the graphical session and the system.
Recommendation
Update the X.Org server to a version containing the fix and restrict access to the X server and SSH X11 forwarding.
Other vulnerabilities in X.Org server
See all- CVE-2024-0409High
A flaw was found in the X.Org server. The cursor code in both Xephyr and Xwayland uses the wrong type of private at creation, using the cursor bits type with the cursor as private, and when initiating the cursor, that overwrites the XSELINUX context.
- CVE-2024-0408Medium
A flaw was found in the X.Org server. The GLX PBuffer code does not call the XACE hook when creating the buffer, leaving it unlabeled. When the client issues another request to access that resource (as with a GetGeometry) or when it creates another resource that needs to access that buffer, such as a GC, the XSELINUX code will try to use an object that was never labeled and crash because the SID is NULL.
Original NVD description (English source)
An out-of-bounds memory access flaw was found in the X.Org server. This issue can be triggered when a device frozen by a sync grab is reattached to a different master device. This issue may lead to an application crash, local privilege escalation (if the server runs with extended privileges), or remote code execution in SSH X11 forwarding environments.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS