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    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 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.

    Published:Dec 28, 2020
    Last Modified:Nov 21, 2024
    EPS:Dec 28, 2020
    EPSS Score:0.00389
    CVSS Score:5.9

    Affected Products

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

    Exploits

    https://www.arista.com/en/support/advisories-notices/security-advisories/11997-security-advisory-57https://www.arista.com/en/support/advisories-notices/security-advisories/11997-security-advisory-57

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High