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cvelistAristaCVELIST:CVE-2021-28509
HistoryMay 25, 2022 - 12:00 a.m.

CVE-2021-28509 TerminAttr streams MACsec sensitive data in clear text to other authorized users in CVP

2022-05-2500:00:00
CWE-255
Arista
www.cve.org

6.1 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

0.001 Low

EPSS

Percentile

32.3%

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.

CNA Affected

[
  {
    "product": "Arista EOS",
    "vendor": "Arista Networks",
    "versions": [
      {
        "lessThanOrEqual": "4.23.11",
        "status": "affected",
        "version": "4.23",
        "versionType": "custom"
      },
      {
        "lessThanOrEqual": "4.24.9",
        "status": "affected",
        "version": "4.24",
        "versionType": "custom"
      },
      {
        "lessThanOrEqual": "4.25.7",
        "status": "affected",
        "version": "4.25",
        "versionType": "custom"
      },
      {
        "lessThanOrEqual": "4.26.5",
        "status": "affected",
        "version": "4.26",
        "versionType": "custom"
      },
      {
        "lessThanOrEqual": "4.27.3",
        "status": "affected",
        "version": "4.27",
        "versionType": "custom"
      }
    ]
  },
  {
    "product": "Arista TerminAttr",
    "vendor": "Arista Networks",
    "versions": [
      {
        "lessThanOrEqual": "v1.10.10",
        "status": "affected",
        "version": " v1.10",
        "versionType": "custom"
      },
      {
        "lessThanOrEqual": "v1.16.7",
        "status": "affected",
        "version": "v1.16",
        "versionType": "custom"
      },
      {
        "lessThanOrEqual": "v1.19.1",
        "status": "affected",
        "version": "v1.19",
        "versionType": "custom"
      }
    ]
  }
]

6.1 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

0.001 Low

EPSS

Percentile

32.3%

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