ZDI-CAN-11429: X.Org Server XIChangeHierarchy 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 XIChangeHierarchy 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
Event History
Frequently Asked Questions
What is the severity of ZDI-CAN-11429?
The severity of ZDI-CAN-11429 is considered high due to its potential to allow local privilege escalation.
How do I fix ZDI-CAN-11429?
To fix ZDI-CAN-11429, update your X.Org Server to the latest version that addresses this vulnerability.
What systems are affected by ZDI-CAN-11429?
ZDI-CAN-11429 affects installations of X.Org Server where low-privileged code execution has been achieved by an attacker.
Can ZDI-CAN-11429 be exploited remotely?
No, ZDI-CAN-11429 requires local access to the machine for an attacker to exploit the vulnerability.
What is the potential impact of ZDI-CAN-11429?
The potential impact of ZDI-CAN-11429 includes unauthorized privilege escalation, allowing attackers to execute arbitrary code with higher privileges.