CVE-2021-28508

Public Exploit
TerminAttr streams IPsec sensitive data in clear text to other authorized users in CVP

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 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.

Remediation

Solution:

  • 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 4.27.2 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 v1.19.0 and later releases

Workaround:

  • On the affected versions, the vulnerabilities can be mitigated by disabling TerminAttr agent.

Categories

6.8
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.08%
Vendor Advisory arista.com
Affected: Arista Networks Arista EOS
Affected: Arista Networks Arista TerminAttr
Published at:
Updated at:

References

Link Tags
https://www.arista.com/en/support/advisories-notices/security-advisories/15484-security-advisory-0077 exploit vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-28508?
CVE-2021-28508 has been scored as a medium severity vulnerability.
How to fix CVE-2021-28508?
To fix CVE-2021-28508: 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 4.27.2 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 v1.19.0 and later releases
Is CVE-2021-28508 being actively exploited in the wild?
It is possible that CVE-2021-28508 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-28508?
CVE-2021-28508 affects Arista Networks Arista EOS, Arista Networks Arista TerminAttr.
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