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CVE-2021-28509

MEDIUM
Published 2022-05-26T19:50:36.432905Z
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CVSS Score

V3.1
6.1
/10
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.001
probability
of exploitation in the wild

There is a 0.1% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.353
Higher than 35.3% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
UNCHANGED

Impact Metrics

Confidentiality
HIGH
Integrity
HIGH
Availability
NONE

Description

This advisory documents the impact of an internally found vulnerability in Arista EOS state streaming telemetry agent TerminAttr and OpenConfig transport protocols. The impact of this vulnerability is that, in certain conditions, TerminAttr might leak MACsec sensitive data in clear text in CVP to other authorized users, which could cause MACsec traffic to be decrypted or modified by other authorized users on the device.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Arista Networks

Arista EOS

Affected Versions:

4.23 4.24 4.25 4.26 4.27
Arista Networks

Arista TerminAttr

Affected Versions:

v1.10 v1.16 v1.19

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed MODERATE

GHSA-pvh9-pfm3-2228

Advisory Details

This advisory documents the impact of an internally found vulnerability in Arista EOS state streaming telemetry agent TerminAttr and OpenConfig transport protocols. The impact of this vulnerability is that, in certain conditions, TerminAttr might leak MACsec sensitive data in clear text in CVP to other authorized users, which could cause MACsec traffic to be decrypted or modified by other authorized users on the device.

CVSS Scoring

CVSS Score

5.0

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-28509
WEB https://www.arista.com/en/support/advisories-notices/security-advisories/15484-security-advisory-0077

Advisory provided by GitHub Security Advisory Database. Published: May 27, 2022, Modified: June 10, 2022

References

https://www.arista.com/en/support/advisories-notices/security-advisories/15484-security-advisory-0077
Published: 2022-05-26T19:50:36.432905Z
Last Modified: 2024-09-16T20:32:30.399Z
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