Amazon Linux 2 Security Advisory: ALAS-2021-1705
Advisory Release Date: 2021-09-08 23:35 Pacific
Advisory Updated Date: 2021-09-15 17:50 Pacific
Severity:
Medium
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