Xorg-Server - Stack Overflow and Uninitialized Data Vulnerabilities
Summary
DLA-1026-1: xorg-server - security update. Affects xorg-server versions < 2:1.12.4-6+deb7u7. Fixed in 2:1.12.4-6+deb7u7. How to fix ↓
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Background
Xorg-Server is an open-source implementation of the X Window System, which provides the framework for graphical user interfaces on Unix-like operating systems. It allows users to interact with applications and display graphics on their screens. The Xorg-Server package is a critical component of the X Window System and is widely used in various Linux distributions. However, it has been found to be vulnerable to two security issues.
Vulnerability Detail
The first vulnerability, identified as CVE-2017-10971, allows an authenticated user to crash the X Server or execute arbitrary code by exploiting a stack overflow in the endianness conversion of X Events. This means that an attacker with valid credentials can potentially disrupt the X Session or gain unauthorized access to the X Server.
The second vulnerability, known as CVE-2017-10972, involves uninitialized data in endianness conversion during XEvent handling. Authenticated malicious users can exploit this flaw to access potentially privileged data from the X Server. This vulnerability poses a risk of unauthorized data access and potential privilege escalation.
How To Fix
Minimum fixed version
2:1.12.4-6+deb7u7
This is the first release that contains the fix.
sudo apt-get install --only-upgrade xorg-serverTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Conclusion
The Xorg-Server package is vulnerable to stack overflow and uninitialized data issues, which can be exploited by authenticated users to crash the X Server, execute arbitrary code, or access potentially privileged data. It is crucial to update the xorg-server package to version 2:1.12.4-6+deb7u7 or later to mitigate these vulnerabilities. For further assistance or support in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for xorg-server →
FAQ
Xorg-Server is an open-source implementation of the X Window System, providing the framework for graphical user interfaces on Unix-like operating systems.
CVE-2017-10971 allows an authenticated user to crash the X Server or execute arbitrary code, potentially leading to a denial of service or unauthorized access to the X Server.
Authenticated malicious users can exploit CVE-2017-10972 to access potentially privileged data from the X Server, which could lead to unauthorized data access and potential privilege escalation.
The vulnerabilities are fixed in version 2:1.12.4-6+deb7u7 or later of the xorg-server package.
To update the xorg-server package, you can use the package manager of your Linux distribution or follow the instructions provided by your distribution's security advisories.
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