Security Update for policycoreutils
Summary
DLA-638-1: policycoreutils - security update. Affects policycoreutils versions < 2.1.10-9+deb7u1. Fixed in 2.1.10-9+deb7u1. How to fix ↓
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Background
policycoreutils is a set of programs required for the basic operation of an SELinux-based system. SELinux is a security module in the Linux kernel that provides access control security policies. These policies define what actions are allowed or denied for each process, file, and network port on the system. policycoreutils includes utilities for managing SELinux policies and settings.
Vulnerability Detail
A sandbox escape vulnerability was discovered in policycoreutils. The vulnerability allows an attacker to bypass the sandbox restrictions imposed by SELinux and execute arbitrary code with elevated privileges. The vulnerability is triggered by the TIOCSTI ioctl, which allows a process to insert characters into the input queue of another terminal. By exploiting this vulnerability, an attacker can inject malicious input into a privileged process and execute arbitrary commands.
How To Fix
Minimum fixed version
2.1.10-9+deb7u1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade policycoreutilsTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no known workaround for this vulnerability. It is essential to apply the security update to protect the system from potential exploitation.
Conclusion
The sandbox escape vulnerability in policycoreutils can allow an attacker to execute arbitrary code with elevated privileges. To mitigate this vulnerability, it is recommended to upgrade the policycoreutils package to the latest version. Applying the security update will ensure that the vulnerable components are replaced with patched versions, closing the vulnerability. For further support on vulnerability remediation, contact DevNack.com.
See every vulnerability recorded for policycoreutils →
FAQ
policycoreutils is a set of programs required for the basic operation of an SELinux-based system. It includes utilities for managing SELinux policies and settings.
SELinux is a security module in the Linux kernel that provides access control security policies. These policies define what actions are allowed or denied for each process, file, and network port on the system.
A sandbox escape vulnerability allows an attacker to bypass the restrictions imposed by a sandbox environment, such as SELinux. It enables the attacker to execute arbitrary code with elevated privileges.
This vulnerability is triggered by the TIOCSTI ioctl, which allows a process to insert characters into the input queue of another terminal. By exploiting this vulnerability, an attacker can inject malicious input into a privileged process and execute arbitrary commands.
No, there is no known workaround for this vulnerability. It is crucial to apply the security update to protect the system from potential exploitation.
Related vulnerabilities
Recent vulnerabilities recorded for policycoreutils.
