QID 352838

Date Published: 2021-09-20

QID 352838: Amazon Linux Security Advisory for linuxptp: ALAS2-2021-1705

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)



Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Allows unauthorized disclosure of information; allows unauthorized modification; allows disruption of service.

  • CVSS V3 rated as High - 7.1 severity.
  • CVSS V2 rated as Medium - 5.5 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2-2021-1705 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 352838

    CVE-2021-3571 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2-2021-1705 Amazon Linux 2 URL Logo alas.aws.amazon.com/AL2/ALAS-2021-1705.html
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