Low: policycoreutils

Issue Overview:

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).(CVE-2018-1063)

Affected Packages:

policycoreutils

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update policycoreutils to update your system.

New Packages:

i686:  
    policycoreutils-2.5-22.amzn2.i686  
    policycoreutils-debuginfo-2.5-22.amzn2.i686  
    policycoreutils-python-2.5-22.amzn2.i686  
    policycoreutils-devel-2.5-22.amzn2.i686  
    policycoreutils-sandbox-2.5-22.amzn2.i686  
    policycoreutils-newrole-2.5-22.amzn2.i686  
    policycoreutils-gui-2.5-22.amzn2.i686  
    policycoreutils-restorecond-2.5-22.amzn2.i686  
  
src:  
    policycoreutils-2.5-22.amzn2.src  
  
x86_64:  
    policycoreutils-2.5-22.amzn2.x86_64  
    policycoreutils-debuginfo-2.5-22.amzn2.x86_64  
    policycoreutils-python-2.5-22.amzn2.x86_64  
    policycoreutils-devel-2.5-22.amzn2.x86_64  
    policycoreutils-sandbox-2.5-22.amzn2.x86_64  
    policycoreutils-newrole-2.5-22.amzn2.x86_64  
    policycoreutils-gui-2.5-22.amzn2.x86_64  
    policycoreutils-restorecond-2.5-22.amzn2.x86_64  

Additional References

Red Hat: CVE-2018-1063

Mitre: CVE-2018-1063