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.

Metrics

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.

Affected Vendors & Products

Vendors Products
Arista Subscribe
7010t-48 Subscribe
7050cx3-32s Subscribe
7050cx3m-32s Subscribe
7050qx-32s Subscribe
7050qx2-32s Subscribe
7050sx-128 Subscribe
7050sx-64 Subscribe
7050sx-72q Subscribe
7050sx2-128 Subscribe
7050sx2-72q Subscribe
7050sx3-48c8 Subscribe
7050sx3-48yc Subscribe
7050sx3-48yc12 Subscribe
7050sx3-48yc8 Subscribe
7050sx3-96yc8 Subscribe
7050tx-48 Subscribe
7050tx-64 Subscribe
7050tx-72q Subscribe
7050tx2-128 Subscribe
7050tx3-48c8 Subscribe
7060cx-32s Subscribe
7060cx2-32s Subscribe
7060dx4-32 Subscribe
7060px4-32 Subscribe
7060sx2-48yc6 Subscribe
720xp-24y6 Subscribe
720xp-24zy4 Subscribe
720xp-48y6 Subscribe
720xp-48zc2 Subscribe
720xp-96zc2 Subscribe
7250qx-64 Subscribe
7260cx Subscribe
7260cx3 Subscribe
7260cx3-64 Subscribe
7260qx Subscribe
7300x-32q Subscribe
7300x-64s Subscribe
7300x-64t Subscribe
7300x3-32c Subscribe
7300x3-48yc4 Subscribe
7304x3 Subscribe
7308x3 Subscribe
7320x-32c Subscribe
7324x Subscribe
7328x Subscribe
7368x4 Subscribe
Eos Subscribe

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.

No data.

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

Sign in to view the affected projects.

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