CVE-2021-28508 json
TerminAttr streams IPsec sensitive data in clear text to other authorized users in CVP
published 4y ago modified 4mo ago also EUVD-2021-15184
- cvss
- 6.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 44%
- public exploits
- 0
- none known
Summary
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 IPsec sensitive data in clear text in CVP to other authorized users, which could cause IPsec traffic to be decrypted or modified by other authorized users on the device.
Patch / fix
- arista terminattr 1.10.11, 1.16.8, 1.19.0
- arista eos 4.24.10, 4.25.8, 4.26.6, 4.27.2
Is CVE-2021-28508 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerExploit prediction
0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- arista.com https://www.arista.com/en/support/advisories-notices/security-advisories/15484-security-advisory-0077 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.8 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N |
| NVD | 2.0 | 3.6 | AV:N/AC:H/Au:S/C:P/I:P/A:N |
Affected products
- Arista Networks Arista EOS
- Arista Networks Arista TerminAttr
Classification
References
-
arista.com
/en/support/advisories-notices/security-advisories/15484-security-advisory-0077
exploit, vendor-advisory
Sources
- CVE List CVE-2021-28508
- NVD CVE-2021-28508
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