CVE-2021-28497

HighCVSS 7.8/10Last modified Jun 17, 2026

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

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-264

Affected software

No affected versions have been published.

Timeline

Published: Sep 9, 2021
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2021

CVE-2021-284987.8In Arista's MOS (Metamako Operating System) software which is supported on the 7130 product line, user enable passwords set in clear text co CVE-2021-284995.5In Arista's MOS (Metamako Operating System) software which is supported on the 7130 product line, user account passwords set in clear text c CVE-2021-285007.8An issue has recently been discovered in Arista EOS where the incorrect use of EOS's AAA API’s by the OpenConfig and TerminAttr agents could CVE-2021-285017.8An issue has recently been discovered in Arista EOS where the incorrect use of EOS's AAA API’s by the OpenConfig and TerminAttr agents could CVE-2021-285039.8The impact of this vulnerability is that Arista's EOS eAPI may skip re-evaluating user credentials when certificate based authentication is CVE-2021-285047.5On Arista Strata family products which have “TCAM profile” feature enabled when Port IPv4 access-list has a rule which matches on “vxlan” as CVE-2021-285057.5On affected Arista EOS platforms, if a VXLAN match rule exists in an IPv4 access-list that is applied to the ingress of an L2 or an L3 port/CVE-2021-285069.1An issue has recently been discovered in Arista EOS where certain gNOI APIs incorrectly skip authorization and authentication which could po CVE-2021-285077.1An issue has recently been discovered in Arista EOS where, under certain conditions, the service ACL configured for OpenConfig gNOI and Open CVE-2021-285086.1This advisory documents the impact of an internally found vulnerability in Arista EOS state streaming telemetry agent TerminAttr and OpenCon CVE-2021-285096.1This advisory documents the impact of an internally found vulnerability in Arista EOS state streaming telemetry agent TerminAttr and OpenCon CVE-2021-285107.5For certain systems running EOS, a Precision Time Protocol (PTP) packet of a management/signaling message with an invalid Type-Length-Value