CVE-2021-28497

Description

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

Remediation

Solution:

  • Upgrade to MOS-0.26.7 or MOS-0.32.0
  • 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

Category

4.4
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.05%
Vendor Advisory arista.com
Affected: Arista Metamako Operating System
Published at:
Updated at:

References

Link Tags
https://www.arista.com/en/support/advisories-notices/security-advisories/12913-security-advisory-65 mitigation vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-28497?
CVE-2021-28497 has been scored as a medium severity vulnerability.
How to fix CVE-2021-28497?
To fix CVE-2021-28497: Upgrade to MOS-0.26.7 or MOS-0.32.0
Is CVE-2021-28497 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-28497 is being actively exploited. 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-2021-28497?
CVE-2021-28497 affects Arista Metamako Operating System.
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