5.9
MEDIUM
CVE-2020-26569
Arista EOS EVPN VxLAN MAC Address to IP Binding 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.

INFO

Published Date :

Dec. 28, 2020, 4:15 p.m.

Last Modified :

Nov. 21, 2024, 5:20 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

2.2
Affected Products

The following products are affected by CVE-2020-26569 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Arista eos
2 Arista 7010t-48
3 Arista 7050cx3-32s
4 Arista 7050cx3m-32s
5 Arista 7050qx-32s
6 Arista 7050qx2-32s
7 Arista 7050sx-128
8 Arista 7050sx-64
9 Arista 7050sx-72q
10 Arista 7050sx2-128
11 Arista 7050sx2-72q
12 Arista 7050sx3-48c8
13 Arista 7050sx3-48yc
14 Arista 7050sx3-48yc12
15 Arista 7050sx3-48yc8
16 Arista 7050sx3-96yc8
17 Arista 7050tx-48
18 Arista 7050tx-64
19 Arista 7050tx-72q
20 Arista 7050tx2-128
21 Arista 7050tx3-48c8
22 Arista 7060cx-32s
23 Arista 7060cx2-32s
24 Arista 7060dx4-32
25 Arista 7060px4-32
26 Arista 7060sx2-48yc6
27 Arista 720xp-24y6
28 Arista 720xp-24zy4
29 Arista 720xp-48y6
30 Arista 720xp-48zc2
31 Arista 720xp-96zc2
32 Arista 7250qx-64
33 Arista 7260cx
34 Arista 7260cx3
35 Arista 7260cx3-64
36 Arista 7260qx
37 Arista 7300x-32q
38 Arista 7300x-64s
39 Arista 7300x-64t
40 Arista 7300x3-32c
41 Arista 7300x3-48yc4
42 Arista 7304x3
43 Arista 7308x3
44 Arista 7320x-32c
45 Arista 7324x
46 Arista 7328x
47 Arista 7368x4
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2020-26569.

URL Resource
https://www.arista.com/en/support/advisories-notices/security-advisories/11997-security-advisory-57 Exploit Vendor Advisory
https://www.arista.com/en/support/advisories-notices/security-advisories/11997-security-advisory-57 Exploit Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-26569 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-26569 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://www.arista.com/en/support/advisories-notices/security-advisories/11997-security-advisory-57
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Reanalysis by [email protected]

    Jan. 27, 2021

    Action Type Old Value New Value
    Removed CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:N/A:P)
    Removed CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Initial Analysis by [email protected]

    Jan. 05, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://www.arista.com/en/support/advisories-notices/security-advisories/11997-security-advisory-57 No Types Assigned https://www.arista.com/en/support/advisories-notices/security-advisories/11997-security-advisory-57 Exploit, Vendor Advisory
    Added CWE NIST NVD-CWE-noinfo
    Added CPE Configuration AND OR *cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:* versions from (including) 4.21.0f up to (including) 4.21.12m *cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:* versions from (including) 4.22.0f up to (including) 4.22.7m *cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:* versions from (including) 4.23.0f up to (including) 4.23.5m *cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:* versions from (including) 4.24.0f up to (including) 4.24.2f 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:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-26569 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2020-26569 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.12 }} 0.01%

score

0.45434

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
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Scope
Confidentiality
Integrity
Availability