Medium: linuxptp

Issue Overview:

A flaw was found in the ptp4l program of the linuxptp package. When ptp4l is operating on a little-endian architecture as a PTP transparent clock, a remote attacker could send a crafted one-step sync message to cause an information leak or crash. The highest threat from this vulnerability is to data confidentiality and system availability. (CVE-2021-3571)

Affected Packages:

linuxptp

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 linuxptp to update your system.

New Packages:

aarch64:  
    linuxptp-2.0-2.amzn2.1.2.aarch64  
    linuxptp-debuginfo-2.0-2.amzn2.1.2.aarch64  
  
i686:  
    linuxptp-2.0-2.amzn2.1.2.i686  
    linuxptp-debuginfo-2.0-2.amzn2.1.2.i686  
  
src:  
    linuxptp-2.0-2.amzn2.1.2.src  
  
x86_64:  
    linuxptp-2.0-2.amzn2.1.2.x86_64  
    linuxptp-debuginfo-2.0-2.amzn2.1.2.x86_64  

Additional References

Red Hat: CVE-2021-3571

Mitre: CVE-2021-3571