Low: ntp

Issue Overview:

The ntpq and ntpdc command-line utilities that are part of ntp package are vulnerable to stack-based buffer overflow via crafted hostname. Applications using these vulnerable utilities with an untrusted input may be potentially exploited, resulting in a crash or arbitrary code execution under privileges of that application.(CVE-2018-12327)

Affected Packages:

ntp

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 ntp to update your system.

New Packages:

aarch64:  
    ntp-4.2.6p5-29.amzn2.0.1.aarch64  
    ntpdate-4.2.6p5-29.amzn2.0.1.aarch64  
    sntp-4.2.6p5-29.amzn2.0.1.aarch64  
    ntp-debuginfo-4.2.6p5-29.amzn2.0.1.aarch64  
  
i686:  
    ntp-4.2.6p5-29.amzn2.0.1.i686  
    ntpdate-4.2.6p5-29.amzn2.0.1.i686  
    sntp-4.2.6p5-29.amzn2.0.1.i686  
    ntp-debuginfo-4.2.6p5-29.amzn2.0.1.i686  
  
noarch:  
    ntp-perl-4.2.6p5-29.amzn2.0.1.noarch  
    ntp-doc-4.2.6p5-29.amzn2.0.1.noarch  
  
src:  
    ntp-4.2.6p5-29.amzn2.0.1.src  
  
x86_64:  
    ntp-4.2.6p5-29.amzn2.0.1.x86_64  
    ntpdate-4.2.6p5-29.amzn2.0.1.x86_64  
    sntp-4.2.6p5-29.amzn2.0.1.x86_64  
    ntp-debuginfo-4.2.6p5-29.amzn2.0.1.x86_64  

Additional References

Red Hat: CVE-2018-12327

Mitre: CVE-2018-12327