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CVE-2023-6816

Xorg-x11-server: heap buffer overflow in devicefocusevent and procxiquerypointer

CVSS 9.8 CRITICALEPSS 2.1%CWE-787
Vexday Risk Score
28Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 9.8EPSS 2.1%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado
Lifecycle
18 Jan 2024Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Red Hat · Red Hat Enterprise Linux 6Red Hat · Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSIONRed Hat · Red Hat Enterprise Linux 7Red Hat · Red Hat Enterprise Linux 8Red Hat · Red Hat Enterprise Linux 8.2 Advanced Update SupportRed Hat · Red Hat Enterprise Linux 8.2 Telecommunications Update ServiceRed Hat · Red Hat Enterprise Linux 8.2 Update Services for SAP SolutionsRed Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat · Red Hat Enterprise Linux 8.4 Telecommunications Update ServiceRed Hat · Red Hat Enterprise Linux 8.4 Update Services for SAP SolutionsRed Hat · Red Hat Enterprise Linux 8.6 Extended Update SupportRed Hat · Red Hat Enterprise Linux 8.8 Extended Update SupportRed Hat · Red Hat Enterprise Linux 9Red Hat · Red Hat Enterprise Linux 9.0 Extended Update SupportRed Hat · Red Hat Enterprise Linux 9.2 Extended Update Support

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References
https://access.redhat.com/errata/RHSA-2024:0320https://access.redhat.com/errata/RHSA-2024:0557https://access.redhat.com/errata/RHSA-2024:0558https://access.redhat.com/errata/RHSA-2024:0597https://access.redhat.com/errata/RHSA-2024:0607https://access.redhat.com/errata/RHSA-2024:0614https://access.redhat.com/errata/RHSA-2024:0617https://access.redhat.com/errata/RHSA-2024:0621https://access.redhat.com/errata/RHSA-2024:0626https://access.redhat.com/errata/RHSA-2024:0629https://access.redhat.com/errata/RHSA-2024:2169https://access.redhat.com/errata/RHSA-2024:2170