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OpenAdvisories
Medium · 5.3 CVE-2021-28510 EUVD-2021-15186GHSA-c5c5-rwc6-67m5

For certain systems running EOS, a Precision Time Protocol (PTP) packet of a management/signaling message with an invalid Type-Length-Value (TLV) causes the PTP agent to restart. Repeated restarts of the service will make the service unavailable.

Published Jan 24, 2023 · Updated Apr 1, 2025 · Assigned by Arista

Vendor: Arista Networks Product: EOS Category: Network devices

Description

For certain systems running EOS, a Precision Time Protocol (PTP) packet of a management/signaling message with an invalid Type-Length-Value (TLV) causes the PTP agent to restart. Repeated restarts of the service will make the service unavailable.

Affected products

VendorProductAffectedFixed
Arista Networks EOS 4.22, 4.27.1 – ≤ 4.27.0, 4.26.4 – ≤ 4.26.0, 4.25.6 – ≤ 4.25.0, 4.24.8 – ≤ 4.24.0, 4.23.10 – ≤ 4.23.0 —

References