QID 44000

Date Published: 2023-03-27

QID 44000: Arista EOS PTP Service Denial of Service (DoS) Vulnerability (SA0076)

Arista EOS

Arista EOS is a fully programmable and highly modular, Linux-based network operation system, using familiar industry-standard CLI, and runs a single binary software image across the Arista switching family.

Affected EOS versions:
4.27.1 and below releases in the 4.27.x train
4.26.4 and below releases in the 4.26.x train
4.25.6 and below releases in the 4.25.x train
4.24.8 and below releases in the 4.24.x train
4.23.10 and below releases in the 4.23.x train
4.22.x train

NOTE:
Only vulnerable if PTP is enabled on the switch and please refer to advisory for affected Arista EOS-based products.

QID Detection Logic (Authenticated):
The check matches Arista EOS version retrieved via Unix Auth using "show version" command.

Successful exploitation of this vulnerability may allow remote attacker can make the PTP service unavailable.

  • CVSS V3 rated as High - 7.5 severity.
  • CVSS V2 rated as Medium - 5 severity.
    • Solution
    Customers are advised to refer Arista Security Advisory SA0076 for patch details.
    Vendor References

    CVEs related to QID 44000

    CVE-2021-28510 |
    Software Advisories
    Advisory ID Software Component Link
    SA0076 URL Logo www.arista.com/en/support/advisories-notices/security-advisory/15439-security-advisory-0076
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