ZDI-CAN-14950: X.Org Server SProcXFixesCreatePointerBarrier Out-Of-Bounds Access Local 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 SProcXFixesCreatePointerBarrier requests. The issue results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an allocated buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of root.
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-CAN-14950?
ZDI-CAN-14950 is rated as a medium-severity vulnerability due to its potential for privilege escalation.
How do I fix ZDI-CAN-14950?
To fix ZDI-CAN-14950, update the X.Org Server to the latest version that contains the security patches.
Who is affected by ZDI-CAN-14950?
Any installations of X.Org Server are potentially affected by ZDI-CAN-14950 if they allow local code execution.
What type of vulnerability is ZDI-CAN-14950?
ZDI-CAN-14950 is a privilege escalation vulnerability that allows local attackers to gain higher access to system resources.
What must an attacker do to exploit ZDI-CAN-14950?
An attacker must first obtain the ability to execute low-privileged code on the target system to exploit ZDI-CAN-14950.