What is the severity of ZDI-CAN-11573?

ZDI-CAN-11573 is classified as a high-severity privilege escalation vulnerability.

How do I fix ZDI-CAN-11573?

To fix ZDI-CAN-11573, update to the latest version of X.Org Server where the vulnerability has been patched.

Who is affected by ZDI-CAN-11573?

ZDI-CAN-11573 affects installations of X.Org Server that have not been updated to address the vulnerability.

What types of attacks can be performed using ZDI-CAN-11573?

Attackers can use ZDI-CAN-11573 for local privilege escalation after executing low-privileged code on the system.

Is there a workaround for ZDI-CAN-11573?

There are no widely recommended workarounds for ZDI-CAN-11573, so applying the security update is advised.

Vulnerability/
ZDI-CAN-11573

high

7.8

29/1/2025

ZDI-CAN-11573: X.Org Server XkbSelectEvents Integer Underflow Privilege Escalation Vulnerability

This vulnerability allows local attackers to escalate privileges on affected installations of X.Org Server. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handling of XkbSelectEvents requests. The issue results from the lack of proper validation of user-supplied data, which can result in an integer underflow before writing to memory. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of root.

Affected Software	Affected Version	How to fix
X.Org Xserver

Never miss a vulnerability like this again

Reference Links

Frequently Asked Questions

What is the severity of ZDI-CAN-11573?
ZDI-CAN-11573 is classified as a high-severity privilege escalation vulnerability.
How do I fix ZDI-CAN-11573?
To fix ZDI-CAN-11573, update to the latest version of X.Org Server where the vulnerability has been patched.
Who is affected by ZDI-CAN-11573?
ZDI-CAN-11573 affects installations of X.Org Server that have not been updated to address the vulnerability.
What types of attacks can be performed using ZDI-CAN-11573?
Attackers can use ZDI-CAN-11573 for local privilege escalation after executing low-privileged code on the system.
Is there a workaround for ZDI-CAN-11573?
There are no widely recommended workarounds for ZDI-CAN-11573, so applying the security update is advised.

agent/references
agent/softwarecombine
agent/title
agent/severity
agent/description
agent/source
agent/type
agent/tags
collector/zdi-advisory
source/ZDI
alias/ZDI-20-1418
alias/ZDI-CAN-11573
alias/CVE-2020-14361
agent/software-canonical-lookup
agent/software-canonical-lookup-request
agent/event
vendor/x.org
canonical/x.org xserver

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.

Frequently Asked Questions

What is the severity of ZDI-CAN-11573?
ZDI-CAN-11573 is classified as a high-severity privilege escalation vulnerability.
How do I fix ZDI-CAN-11573?
To fix ZDI-CAN-11573, update to the latest version of X.Org Server where the vulnerability has been patched.
Who is affected by ZDI-CAN-11573?
ZDI-CAN-11573 affects installations of X.Org Server that have not been updated to address the vulnerability.
What types of attacks can be performed using ZDI-CAN-11573?
Attackers can use ZDI-CAN-11573 for local privilege escalation after executing low-privileged code on the system.
Is there a workaround for ZDI-CAN-11573?
There are no widely recommended workarounds for ZDI-CAN-11573, so applying the security update is advised.