CVE-2021-28500

EUVD-2021-15176
An 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 result in unrestricted access to the device for local users with nopassword configuration.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.1 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
AristaCNA
9.1 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 53%
Affected Products (NVD)
VendorProductVersion
aristaeos
𝑥
< 4.20
aristaeos
4.21.0 ≤
𝑥
≤ 4.21.14m
aristaeos
4.22.0 ≤
𝑥
≤ 4.22.11m
aristaeos
4.23.0 ≤
𝑥
≤ 4.23.8m
aristaeos
4.24.6.0 ≤
𝑥
≤ 4.24.6m
aristaeos
4.25.0 ≤
𝑥
≤ 4.25.4m
aristaeos
4.26.0 ≤
𝑥
≤ 4.26.1f
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071
https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071