In EVPN VxLAN setups in Arista EOS, specific malformed packets can lead to incorrect MAC to IP bindings and as a result packets can be incorrectly forwarded across VLAN boundaries. This can result in traffic being discarded on the receiving VLAN. This affects versions: 4.21.12M and below releases in the 4.21.x train; 4.22.7M and below releases in the 4.22.x train; 4.23.5M and below releases in the 4.23.x train; 4.24.2F and below releases in the 4.24.x train.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.00389.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
n/a n/a affected
Version Status Constraints
n/a affected —

Configuration 1 [-]

AND
OR cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*
cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*
cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*
cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*
OR cpe:2.3:h:arista:7010t-48:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7050cx3-32s:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7050cx3m-32s:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7050qx-32s:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7050qx2-32s:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7050sx-128:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7050sx-64:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7050sx-72q:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7050sx2-128:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7050sx2-72q:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7050sx3-48c8:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7050sx3-48yc:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7050sx3-48yc12:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7050sx3-48yc8:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7050sx3-96yc8:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7050tx-48:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7050tx-64:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7050tx-72q:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7050tx2-128:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7050tx3-48c8:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7060cx-32s:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7060cx2-32s:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7060dx4-32:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7060px4-32:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7060sx2-48yc6:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:720xp-24y6:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:720xp-24zy4:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:720xp-48y6:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:720xp-48zc2:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:720xp-96zc2:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7250qx-64:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7260cx:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7260cx3:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7260cx3-64:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7260qx:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7300x-32q:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7300x-64s:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7300x-64t:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7300x3-32c:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7300x3-48yc4:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7304x3:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7308x3:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7320x-32c:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7324x:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7328x:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:7368x4:-:*:*:*:*:*:*:*

No data.

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Advisories
Source ID Title
EUVD EUVD EUVD-2020-19114 In EVPN VxLAN setups in Arista EOS, specific malformed packets can lead to incorrect MAC to IP bindings and as a result packets can be incorrectly forwarded across VLAN boundaries. This can result in traffic being discarded on the receiving VLAN. This affects versions: 4.21.12M and below releases in the 4.21.x train; 4.22.7M and below releases in the 4.22.x train; 4.23.5M and below releases in the 4.23.x train; 4.24.2F and below releases in the 4.24.x train.
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.arista.com/en/support/advisories-notices/security-advisories/11997-security-advisory-57 cve-icon cve-icon
History

No history.

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-04T15:56:04.942Z

Reserved: 2020-10-06T00:00:00

Link: CVE-2020-26569

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2020-12-28T16:15:12.870

Modified: 2024-11-21T05:20:06.097

Link: CVE-2020-26569

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses