CVE-2021-28509: TerminAttr streams MACsec sensitive data in clear text to other authorized users in CVP
First published: Thu May 26 2022(Updated: )
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.
Credit: psirt@arista.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Arista Terminattr | <1.10.11 | |
| Arista Terminattr | >=1.11.0<1.16.8 | |
| Arista Terminattr | >=1.17.0<1.19.2 | |
| Arista EOS | >=4.23<=4.23.11 | |
| Arista EOS | >=4.24<4.24.10 | |
| Arista EOS | >=4.25<4.25.8 | |
| Arista EOS | >=4.26<4.26.6 | |
| Arista EOS | >=4.27<4.27.4 | |
| Arista Ccs-722xpm-48y4 | ||
| Arista Ccs-722xpm-48zy8 | ||
| Arista 7050cx3-32s | ||
| Arista 7050cx3m-32s | ||
| Arista 7050sx3-48c8 | ||
| Arista 7050sx3-48yc | ||
| Arista 7050sx3-48yc12 | ||
| Arista 7050sx3-48yc8 | ||
| Arista 7050sx3-96yc8 | ||
| Arista 7050tx3-48c8 | ||
| Arista Dcs-7050cx3-32s | ||
| Arista Dcs-7050cx3-32s-r | ||
| Arista Dcs-7050cx3m-32s | ||
| Arista Dcs-7050sx3-48c8 | ||
| Arista Dcs-7050sx3-48yc12 | ||
| Arista Dcs-7050sx3-48yc8 | ||
| Arista Dcs-7050sx3-96yc8 | ||
| Arista 7280cr2ak-30 | ||
| Arista 7280cr2k-60 | ||
| Arista 7280cr3-32d4 | ||
| Arista 7280cr3-32p4 | ||
| Arista 7280cr3-96 | ||
| Arista 7280cr3k-32d4 | ||
| Arista 7280cr3k-32p4 | ||
| Arista 7280cr3k-96 | ||
| Arista 7280dr3-24 | ||
| Arista 7280dr3k-24 | ||
| Arista 7280pr3-24 | ||
| Arista 7280pr3k-24 | ||
| Arista 7280r2 | ||
| Arista 7280r3 | ||
| Arista 7280sr3-48yc8 | ||
| Arista 7280sr3k-48yc8 | ||
| Arista 7500r2 | ||
| Arista 7500r3 | ||
| Arista 7500r3-24d | ||
| Arista 7500r3-24p | ||
| Arista 7500r3-36cq | ||
| Arista 7500r3k-36cq | ||
| Arista 7800r3-36p | ||
| Arista 7800r3-48cq | ||
| Arista 7800r3k-48cq | ||
| Arista 7388x5 |
Remedy
The recommended resolution is to upgrade to a remediated software version at your earliest convenience. The vulnerability is fixed in the following versions: EOS versions: 4.24.10 and later release in the 4.24.x train 4.25.8 and later releases in the 4.25.x train 4.26.6 and later releases in the 4.26.x train 4.27.4 and later releases in the 4.27.x train TerminAttr versions: TerminAttr v1.10.11 and later releases in the v1.10.x train TerminAttr v1.16.8 and later releases in the v1.16.x train TerminAttr v1.19.2 and later releases
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Reference Links
Frequently Asked Questions
What is CVE-2021-28509?
CVE-2021-28509 is a vulnerability in Arista EOS state streaming telemetry agent TerminAttr and OpenConfig transport protocols that could lead to the leakage of MACsec sensitive data in clear text.
Which software is affected by CVE-2021-28509?
Arista TerminAttr versions up to 1.10.11, Arista TerminAttr versions between 1.11.0 and 1.16.8, and Arista TerminAttr versions between 1.17.0 and 1.19.2, as well as Arista EOS versions between 4.23 and 4.23.11, 4.24 and 4.24.10, 4.25 and 4.25.8, 4.26 and 4.26.6, and 4.27 and 4.27.4 are affected.
What is the severity of CVE-2021-28509?
CVE-2021-28509 has a severity rating of 6.1 (Medium).
How can I fix CVE-2021-28509?
To fix CVE-2021-28509, update Arista TerminAttr to version 1.10.11 or later, or update Arista EOS to version 4.23.11 or later.
Where can I find more information about CVE-2021-28509?
You can find more information about CVE-2021-28509 at the following link: [https://www.arista.com/en/support/advisories-notices/security-advisories/15484-security-advisory-0077](https://www.arista.com/en/support/advisories-notices/security-advisories/15484-security-advisory-0077)
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- agent/weakness
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/title
- agent/author
- agent/last-modified-date
- agent/remedy
- agent/references
- agent/tags
- agent/description
- agent/first-publish-date
- agent/event
- vendor/arista
- canonical/arista terminattr
- version/arista terminattr/1.11.0
- version/arista terminattr/1.17.0
- canonical/arista eos
- version/arista eos/4.23
- version/arista eos/4.23.11
- version/arista eos/4.24
- version/arista eos/4.25
- version/arista eos/4.26
- version/arista eos/4.27
- canonical/arista ccs-722xpm-48y4
- canonical/arista ccs-722xpm-48zy8
- canonical/arista 7050cx3-32s
- canonical/arista 7050cx3m-32s
- canonical/arista 7050sx3-48c8
- canonical/arista 7050sx3-48yc
- canonical/arista 7050sx3-48yc12
- canonical/arista 7050sx3-48yc8
- canonical/arista 7050sx3-96yc8
- canonical/arista 7050tx3-48c8
- canonical/arista dcs-7050cx3-32s
- canonical/arista dcs-7050cx3-32s-r
- canonical/arista dcs-7050cx3m-32s
- canonical/arista dcs-7050sx3-48c8
- canonical/arista dcs-7050sx3-48yc12
- canonical/arista dcs-7050sx3-48yc8
- canonical/arista dcs-7050sx3-96yc8
- canonical/arista 7280cr2ak-30
- canonical/arista 7280cr2k-60
- canonical/arista 7280cr3-32d4
- canonical/arista 7280cr3-32p4
- canonical/arista 7280cr3-96
- canonical/arista 7280cr3k-32d4
- canonical/arista 7280cr3k-32p4
- canonical/arista 7280cr3k-96
- canonical/arista 7280dr3-24
- canonical/arista 7280dr3k-24
- canonical/arista 7280pr3-24
- canonical/arista 7280pr3k-24
- canonical/arista 7280r2
- canonical/arista 7280r3
- canonical/arista 7280sr3-48yc8
- canonical/arista 7280sr3k-48yc8
- canonical/arista 7500r2
- canonical/arista 7500r3
- canonical/arista 7500r3-24d
- canonical/arista 7500r3-24p
- canonical/arista 7500r3-36cq
- canonical/arista 7500r3k-36cq
- canonical/arista 7800r3-36p
- canonical/arista 7800r3-48cq
- canonical/arista 7800r3k-48cq
- canonical/arista 7388x5