9.8
Critical
CVE-2023-6816 Xorg-x11-server: heap buffer overflow in devicefocusevent and procxiquerypointer
Description
A flaw was found in X.Org server. Both DeviceFocusEvent and the XIQueryPointer reply contain a bit for each logical button currently down. Buttons can be arbitrarily mapped to any value up to 255, but the X.Org Server was only allocating space for the device's particular number of buttons, leading to a heap overflow if a bigger value was used.
CVSS 3.1 detail
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitable remotely over the network, without an account and without any user action; an attacker can seriously compromise confidentiality, integrity or availability.
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- Interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION | Versions not published | |
| Red Hat Enterprise Linux 7 | Versions not published | |
| Red Hat Enterprise Linux 8 | Versions not published | |
| Red Hat Enterprise Linux 8.2 Advanced Update Support | Versions not published | |
| Red Hat Enterprise Linux 8.2 Telecommunications Update Service | Versions not published | |
| Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions | Versions not published | |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | Versions not published | |
| Red Hat Enterprise Linux 8.4 Telecommunications Update Service | Versions not published | |
| Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions | Versions not published |
Show the 6 other branches Hide the 6 other branches
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 8.6 Extended Update Support | Versions not published | |
| Red Hat Enterprise Linux 8.8 Extended Update Support | Versions not published | |
| Red Hat Enterprise Linux 9 | Versions not published | |
| Red Hat Enterprise Linux 9.0 Extended Update Support | Versions not published | |
| Red Hat Enterprise Linux 9.2 Extended Update Support | Versions not published | |
| Red Hat Enterprise Linux 6 | Versions not published |