CVE-2018-1063: Medium severity red hat enterprise linux vulnerability
Context relabeling of filesystems is vulnerable to symbolic link attack, allowing a local, unprivileged malicious entity to change the SELinux context of an arbitrary file to a context with few restrictions. This only happens when the relabeling process is done, usually when taking SELinux state from disabled to enable (permissive or enforcing). The issue was found in policycoreutils 2.5-11.
Other sources
policycoreutils was found to be vulnerable to a symlink attack that allows an local user to change the SELinux context of arbitrary files. This issue only occurs at relabeling time, through symlinks present in the /tmp and /var/tmp directories.
— Red Hat
Affected Software
Event History
Frequently Asked Questions
What is CVE-2018-1063?
CVE-2018-1063 is a vulnerability that allows a local unprivileged attacker to change the SELinux context of an arbitrary file to a context with few restrictions.
How severe is CVE-2018-1063?
CVE-2018-1063 has a severity rating of medium, with a score of 4.4.
Which software is affected by CVE-2018-1063?
Redhat Enterprise Linux 7.0 and SELinux Project SELinux are affected by CVE-2018-1063.
How can I fix CVE-2018-1063?
To fix CVE-2018-1063, it is recommended to apply the patches provided by Redhat or SELinux Project.
Where can I find more information about CVE-2018-1063?
You can find more information about CVE-2018-1063 in the references provided: [RHSA-2018:0913](https://access.redhat.com/errata/RHSA-2018:0913) and [Bugzilla](https://bugzilla.redhat.com/show_bug.cgi?id=1550122).