Home/CVE/For certain systems running EOS, a Precision Time Protocol (PTP) packet of a management/signaling message with an invali
CVE

CVE-2021-28510

For certain systems running EOS, a Precision Time Protocol (PTP) packet of a management/signaling message with an invali

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.

MEDIUM · CVSS 5.3 EPSS 0.00566
Schedule remediation
  • Public exploit or PoC is available
  • SSVC automatable: yes - attacks can be scripted at scale
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-1284Improper Validation of Specified Quantity in Input
CWE-400Uncontrolled Resource Consumption
▤

Affected Products & Versions

5
arista eos< 4.23.10
arista eos>= 4.24.0 and < 4.24.8
arista eos>= 4.25.0 and < 4.25.6
arista eos>= 4.26.0 and < 4.26.4
arista eos>= 4.27.0 and < 4.27.1
⚠

Public Exploits & PoCs

1
pocwww.arista.com · 15439-security-advisory-0076www.arista.com
▣

Scoring & Timeline

5.3
MEDIUM · CVSS v3.1 · psirt@arista.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD26 Jan 2023 · 09:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
yes
Technical impact
partial
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