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MEDIUM · 5.9

CVE-2020-26569

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 ...

Vulnerability Description

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.

CVSS Score

5.9

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
AristaEos>= 4.21.0f, <= 4.21.12m
Arista7010T-48-
Arista7050Cx3-32S-
Arista7050Cx3M-32S-
Arista7050Qx-32S-
Arista7050Qx2-32S-
Arista7050Sx-128-
Arista7050Sx-64-
Arista7050Sx-72Q-
Arista7050Sx2-128-
Arista7050Sx2-72Q-
Arista7050Sx3-48C8-
Arista7050Sx3-48Yc-
Arista7050Sx3-48Yc12-
Arista7050Sx3-48Yc8-
Arista7050Sx3-96Yc8-
Arista7050Tx-48-
Arista7050Tx-64-
Arista7050Tx-72Q-
Arista7050Tx2-128-

References

FAQ

What is CVE-2020-26569?

CVE-2020-26569 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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 ...

How severe is CVE-2020-26569?

CVE-2020-26569 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-26569?

Check the references section above for vendor advisories and patch information. Affected products include: Arista Eos, Arista 7010T-48, Arista 7050Cx3-32S, Arista 7050Cx3M-32S, Arista 7050Qx-32S.