High severity · published Jan 14, 2022
CVE-2021-28500
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…
7.8
CVSS
0.8%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 57% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EO
Eos · Arista
before 4.20; 4.21.0 through 4.21.14m; 4.22.0 through 4.22.11m; 4.23.0 through 4.23.8m; 4.24.6.0 through 4.24.6m; 4.25.0 through 4.25.4m; +1 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-28500
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-28500
Exploit
https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071
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