CVE-2021-28497: High severity Arista Metamako Operating System vulnerability

Published Sep 9, 2021
·
Updated

In Arista's MOS (Metamako Operating System) software which is supported on the 7130 product line, under certain conditions, the bash shell might be accessible to unprivileged users in situations where they should not have access. This issue affects: Arista Metamako Operating System All releases in the MOS-0.1x train MOS-0.26.6 and below releases in the MOS-0.2x train MOS-0.31.1 and below releases in the MOS-0.3x train

Affected Software

3 affected components
Arista Metamako Operating System<=0.26.6
Arista Metamako Operating System>=0.31.0<0.32.0
Arista 7130

Remediation

Information

Upgrade to MOS-0.26.7 or MOS-0.32.0

Information

Install hotfix stored at https://www.arista.com/assets/data/SecurityAdvisories/SA64-67/SecurityAdvisory64-67-Hotfix-mos-1818-2.0.0-1.11.core2_64.rpm For detailed information about hotfix installation, please see the advisory https://www.arista.com/en/support/advisories-notices/security-advisories/12912-security-advisory-64

Event History

Sep 9, 2021
CVE Published
via MITRE·12:41 PM
Data Sourced
via MITRE·12:41 PM
RemedyDescriptionSeverityWeakness
Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is CVE-2021-28497?

CVE-2021-28497 is a vulnerability that affects Arista's MOS (Metamako Operating System) software on the 7130 product line.

2

What is the severity of CVE-2021-28497?

CVE-2021-28497 has a severity rating of 7.8 (high).

3

How does CVE-2021-28497 affect Arista Metamako Operating System?

CVE-2021-28497 allows unprivileged users to access the bash shell in situations where they should not have access.

4

Which versions of Arista Metamako Operating System are affected by CVE-2021-28497?

CVE-2021-28497 affects all releases up to and including 0.26.6 of Arista Metamako Operating System, as well as releases from 0.31.0 to 0.32.0 (excluding 0.32.0).

5

How can I find more information about CVE-2021-28497?

For more information on CVE-2021-28497, refer to the Arista Security Advisory 65 at https://www.arista.com/en/support/advisories-notices/security-advisories/12913-security-advisory-65.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203