Arista EOS AAA API improper authorization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.2$0-$5k0.00

A vulnerability classified as critical has been found in Arista EOS (version unknown). Affected is an unknown code of the component AAA API. The manipulation with an unknown input leads to a privilege escalation vulnerability. CWE is classifying the issue as CWE-285. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was published 01/15/2022. The advisory is available at arista.com. This vulnerability is traded as CVE-2021-28501 since 03/16/2021. The exploitability is told to be easy. Local access is required to approach this attack. A authentication is needed for exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1548.002 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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CVSSv3infoedit

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 7.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 9.1
CNA Vector (Arista Networks, Inc.): 🔒

CVSSv2infoedit

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfoedit

Class: Privilege escalation
CWE: CWE-285
ATT&CK: T1548.002

Local: Yes
Remote: No

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfoedit

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfoedit

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfoedit

03/16/2021 CVE assigned
01/15/2022 +305 days Advisory disclosed
01/15/2022 +0 days VulDB entry created
01/19/2022 +4 days VulDB last update

Sourcesinfoedit

Advisory: arista.com
Status: Confirmed

CVE: CVE-2021-28501 (🔒)

Entryinfoedit

Created: 01/15/2022 07:44 AM
Updated: 01/19/2022 10:49 AM
Changes: (1) source_cve_nvd_summary
Complete: 🔍

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