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Vulnerability Details :

CVE-2021-28507

Summary
Assigner-Arista
Assigner Org ID-c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7
Published At-14 Jan, 2022 | 19:04
Updated At-17 Sep, 2024 | 04:20
Rejected At-
Credits

An issue has recently been discovered in Arista EOS where, under certain conditions, the service ACL configured for OpenConfig gNOI and OpenConfig RESTCONF might be bypassed, which results in the denied requests being forwarded to the agent.

An issue has recently been discovered in Arista EOS where, under certain conditions, the service ACL configured for OpenConfig gNOI and OpenConfig RESTCONF might be bypassed, which results in the denied requests being forwarded to the agent.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:Arista
Assigner Org ID:c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7
Published At:14 Jan, 2022 | 19:04
Updated At:17 Sep, 2024 | 04:20
Rejected At:
▼CVE Numbering Authority (CNA)
An issue has recently been discovered in Arista EOS where, under certain conditions, the service ACL configured for OpenConfig gNOI and OpenConfig RESTCONF might be bypassed, which results in the denied requests being forwarded to the agent.

An issue has recently been discovered in Arista EOS where, under certain conditions, the service ACL configured for OpenConfig gNOI and OpenConfig RESTCONF might be bypassed, which results in the denied requests being forwarded to the agent.

Affected Products
Vendor
Arista Networks, Inc.Arista Networks
Product
EOS
Versions
Affected
  • 4.22.x
  • From 4.26.2F through 4.26.0 (custom)
  • From 4.25.5.1M through 4.25.5 (custom)
  • From 4.25.4M through 4.25.4 (custom)
  • From 4.25.3 through 4.25.0 (custom)
  • From 4.24.7M through 4.24.0 (custom)
  • From 4.23.9M through 4.23.0 (custom)
  • From 4.21.x through 4.21.x (custom)
Problem Types
TypeCWE IDDescription
CWECWE-284CWE-284 Improper Access Control
Type: CWE
CWE ID: CWE-284
Description: CWE-284 Improper Access Control
Metrics
VersionBase scoreBase severityVector
3.15.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N
Version: 3.1
Base score: 5.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

The recommended resolution is to upgrade to a remediated software version at your earliest convenience. Arista recommends customers move to the latest version of each release. CVE-2021-28507 has been fixed in the following releases: 4.26.3M and later releases in the 4.26.x train 4.25.6M and later releases in the 4.25.x train 4.25.4.1M and later releases in the 4.25.4.x train 4.24.8M and later releases in the 4.24.x train 4.23.10M and later releases in the 4.23.x train

Configurations
Workarounds

On the affected versions, all vulnerabilities can be mitigated by disabling OpenConfig gNMI/gNOI and OpenConfig RESTCONF and TerminAttr. If use of these agents is required, a hotfix employing a proxy service can be deployed.

To mitigate CVE-2021-28507 with the continued use of the affected agents, a hotfix employing a proxy service can be deployed. The proxy is configured behind the gNMI/gNOI or RESTCONF server. The hotfix can be downloaded at https://www.arista.com/en/support/advisories-notices/sa-download/?sa=71-SecurityAdvisory0071Hotfix.i386.swix for 32 bit systems and https://www.arista.com/en/support/advisories-notices/sa-download/?sa=71-SecurityAdvisory0071Hotfix.x86_64.swix for 64 bit systems.

Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071
x_refsource_MISC
Hyperlink: https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071
x_refsource_MISC
x_transferred
Hyperlink: https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071
Resource:
x_refsource_MISC
x_transferred
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:psirt@arista.com
Published At:14 Jan, 2022 | 20:15
Updated At:14 Jul, 2022 | 18:47

An issue has recently been discovered in Arista EOS where, under certain conditions, the service ACL configured for OpenConfig gNOI and OpenConfig RESTCONF might be bypassed, which results in the denied requests being forwarded to the agent.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.17.1HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
Secondary3.15.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N
Primary2.04.9MEDIUM
AV:N/AC:M/Au:S/C:P/I:P/A:N
Type: Primary
Version: 3.1
Base score: 7.1
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
Type: Secondary
Version: 3.1
Base score: 5.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N
Type: Primary
Version: 2.0
Base score: 4.9
Base severity: MEDIUM
Vector:
AV:N/AC:M/Au:S/C:P/I:P/A:N
CPE Matches
Arista Networks, Inc.
arista
>>eos>>Versions from 4.23.0(inclusive) to 4.23.9m(inclusive)
cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*
Arista Networks, Inc.
arista
>>eos>>Versions from 4.24.0(inclusive) to 4.24.7m(inclusive)
cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*
Arista Networks, Inc.
arista
>>eos>>Versions from 4.25.0(inclusive) to 4.25.3(inclusive)
cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*
Arista Networks, Inc.
arista
>>eos>>Versions from 4.25.4(inclusive) to 4.25.4m(inclusive)
cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*
Arista Networks, Inc.
arista
>>eos>>Versions from 4.25.5(inclusive) to 4.25.5.1m(inclusive)
cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*
Arista Networks, Inc.
arista
>>eos>>Versions from 4.26.0(inclusive) to 4.26.2f(inclusive)
cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*
Arista Networks, Inc.
arista
>>eos>>4.21.0f
cpe:2.3:o:arista:eos:4.21.0f:*:*:*:*:*:*:*
Arista Networks, Inc.
arista
>>eos>>4.21.1f
cpe:2.3:o:arista:eos:4.21.1f:*:*:*:*:*:*:*
Arista Networks, Inc.
arista
>>eos>>4.21.3f
cpe:2.3:o:arista:eos:4.21.3f:*:*:*:*:*:*:*
Arista Networks, Inc.
arista
>>eos>>4.22.0f
cpe:2.3:o:arista:eos:4.22.0f:*:*:*:*:*:*:*
Arista Networks, Inc.
arista
>>eos>>4.22.1f
cpe:2.3:o:arista:eos:4.22.1f:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
NVD-CWE-noinfoPrimarynvd@nist.gov
CWE-284Secondarypsirt@arista.com
CWE ID: NVD-CWE-noinfo
Type: Primary
Source: nvd@nist.gov
CWE ID: CWE-284
Type: Secondary
Source: psirt@arista.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071psirt@arista.com
Exploit
Mitigation
Patch
Vendor Advisory
Hyperlink: https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071
Source: psirt@arista.com
Resource:
Exploit
Mitigation
Patch
Vendor Advisory

Change History

0
Information is not available yet

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