Medium: keepalived

Issue Overview:

keepalived 2.0.8 didn’t check for pathnames with symlinks when writing data to a temporary file upon a call to PrintData or PrintStats. This allowed local users to overwrite arbitrary files if fs.protected_symlinks is set to 0, as demonstrated by a symlink from /tmp/keepalived.data or /tmp/keepalived.stats to /etc/passwd.(CVE-2018-19044)

Affected Packages:

keepalived

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 keepalived to update your system.

New Packages:

aarch64:  
    keepalived-1.3.5-16.amzn2.aarch64  
    keepalived-debuginfo-1.3.5-16.amzn2.aarch64  
  
i686:  
    keepalived-1.3.5-16.amzn2.i686  
    keepalived-debuginfo-1.3.5-16.amzn2.i686  
  
src:  
    keepalived-1.3.5-16.amzn2.src  
  
x86_64:  
    keepalived-1.3.5-16.amzn2.x86_64  
    keepalived-debuginfo-1.3.5-16.amzn2.x86_64  

Additional References

Red Hat: CVE-2018-19044

Mitre: CVE-2018-19044